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Comparing 2008 American Community Survey Data

Component ID: #ti1645158209

Generally, you can compare American Community Survey (ACS) 1-year estimates with Census 2000 and other ACS 1-year data. However, since ACS variables change over time, some areas and subjects must be compared with caution, or not compared at all.

Generally, you can compare American Community Survey (ACS) 3-year estimates with Census 2000 data. However, since ACS variables change over time, some areas and subjects must be compared with caution, or not compared at all.

  1. When comparing estimates for different areas, use the same period length for each estimate. This means you should not compare a 1-year estimate to a 3-year estimate.
  2. The Census Bureau discourages direct comparisons between estimates for overlapping periods. Instead, compare non-overlapping estimates. This means we discourage you from comparing the 2005-2007 ACS estimates to 2006-2008 ACS estimates. It is better for you to compare a 2005-2007 ACS estimate to a 2008-2010 ACS estimate.

Component ID: #ti28527539

Subject Area* 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000

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Component ID: #ti825807943

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Age

Compare with Caution

The entire population continually ages into older age groups over time and babies fill in the youngest age group. So, the population of a certain age is made up of a completely different group of people from one time period to the next. Since populations occasionally experience booms/increases and busts/decreases in births, deaths, or migration (for example, the postwar Baby Boom from 1946-1964), one should not necessarily expect that the population in an age group in Census 2000 should be similar in size or proportion to the population in the same age group in different data year(s). For example, Baby Boomers were age 36 to 54 in Census 2000 while they were age 44 to 62 in the 2008 ACS 1-year and between ages 42 to 62 in the multiyear 2006-2008 period. So, the age group 55 to 59 would show a considerable increase in population when comparing Census 2000 data with the single year or multiyear ACS data.

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Compare

Compare with Caution

The entire population continually ages into older age groups over time and babies fill in the youngest age group. So, the population of a certain age is made up of a completely different group of people from one time period to the next. Since populations occasionally experience booms/increases and busts/decreases in births, deaths, or migration (for example, the postwar Baby Boom from 1946-1964), one should not necessarily expect that the population in an age group in Census 2000 should be similar in size or proportion to the population in the same age group in different data year(s). For example, Baby Boomers were age 36 to 54 in Census 2000 while they were age 44 to 62 in the 2008 ACS 1-year and between ages 42 to 62 in the multiyear 2006-2008 period. So, the age group 55 to 59 would show a considerable increase in population when comparing Census 2000 data with the single year or multiyear ACS data.

Sex

Compare

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Component ID: #ti1672207994

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Race

Compare with Caution

The ACS question on race was revised in 2008 to make it consistent with the Census 2010 race question. The change in estimates for 2008 may be due to demographic changes, as well as factors including questionnaire changes, differences in ACS population controls, and methodological differences in the population estimates, and therefore should be used with caution.This 2008 ACS race question is different from the Census 2000 race question, therefore comparisons should be made with caution.

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Compare with Caution

The ACS question on race was revised in 2008 to make it consistent with the Census 2010 race question. For more information, see the "questionnaire changes document" [PDF - 2.2MB]. The reporting of “Other Asian” groups (e.g., Pakistani), “Other Pacific Islander” groups (e.g., Fijian), and the reporting of “White” responses increased at the national level, and the reporting of “Some Other Race” responses decreased at the national level. The change in estimates from 2007 to 2008 may be due to several factors including questionnaire changes, population controls, and methodological changes to the population estimates, and therefore should be used with caution. For more information about the changes in the estimates, go here [PDF - <1.0 MB].

Compare with Caution

The ACS question on race was revised in 2008 to make it consistent with the Census 2010 race question. Any change, compared with Census 2000, may be due to demographic changes, questionnaire changes, differences in ACS population controls, and/or methodological differences in the population estimates.

Component ID: #ti380713516

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Hispanic or Latino Origin

Compare with Caution

The ACS question on Hispanic origin was revised in 2008 to make it consistent with the Census 2010 Hispanic origin question. The change in estimates for 2008 may be due to demographic changes, as well as factors including questionnaire changes, differences in ACS population controls, and methodological differences in the population estimates, and therefore should be used with caution. This 2008 Hispanic origin question is different from the Census 2000 question on Hispanic origin, therefore comparisons should be made with caution.

table crosswalk

Compare with Caution

The ACS question on Hispanic origin was revised in 2008 to make it consistent with the Census 2010 Hispanic origin question. For more information, see the "questionnaire changes document" [PDF - 2.2MB]. The reporting of specific Hispanic groups (e.g., Colombian, Dominican, Spaniard, etc.) increased at the national level. The change in estimates from 2007 to 2008 may be due to several factors including questionnaire changes, population controls, and methodological changes to the population estimates, and therefore should be used with caution. For more information about the changes in the estimates, go here.

Compare with Caution

The ACS question on Hispanic origin was revised in 2008 to make it consistent with the Census 2010 race question. Any change, compared with Census 2000, may be due to demographic changes, questionnaire changes, differences in ACS population controls, and/or methodological differences in the population estimates.

Component ID: #ti87310509

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Ancestry

Compare

Ancestry is the only item for which a “not reported” category is published since missing ancestries are never assigned or allocated. The extent of missing ancestry answers was higher in Census 2000 than in the ACS. The difference in the level of response may contribute to the difference in the two distributions.

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Compare with Caution
(Scotch-Irish)

Beginning with the 2008 ACS 1-year data products, people who reported Irish-Scotch ancestry were classified under “Other groups”, whereas in the 2007 ACS and earlier they were classified as Scotch-Irish. Due to this classification change, the Scotch-Irish category decreased from 2007-2008.

Compare (all other ancestries)

Compare

Ancestry is the only item for which a "not reported" category is published since missing ancestries are never assigned or allocated. The extent of missing ancestry answers was higher in Census 2000 than in the ACS. The difference in the level of response may contribute to the difference in the two distributions.

Component ID: #ti206092498

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Citizenship Status

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Nativity

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Year of Entry

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Census 2000 represents data collected as of April 1, 2000 and thus the “2000” year of entry category accounts for the first quarter (Jan-Mar) in 2000 only. The ACS represents data collected throughout the entire year and thus the “2000” year of entry category accounts for the entire year of 2000.

No comparable detailed tables published

Compare

Compare

Census 2000 represents data collected as of April 1, 2000 and thus the "2000" year of entry category accounts for the first quarter (Jan-Mar) in 2000 only. The ACS represents data collected throughout the entire year and thus the "2000" year of entry category accounts for the entire year of 2000.

Component ID: #ti499495505

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Place of Birth

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Component ID: #ti792898512

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Residence 1 Year Ago (Migration)

Do Not Compare

The ACS asked for residence 1 year ago whereas Census 2000 asked for residence 5 years ago.

No comparable detailed tables published

Compare with Caution

Beginning with the 2008 ACS, the migration section of the questionnaire was expanded to collect street address information for residence 1 year ago. The additional detail improves the accuracy of coding and updating residence 1 year ago to current geographical boundaries, which may affect the estimates for movers within the same city/town and movers from principal cities. Areas with recent boundary changes, vague boundaries, or duplicate names are most likely affected. For more information see the report titled Report P.3: Evaluation Report Covering Residence 1 Year Ago (Migration).

Do Not Compare

The ACS asked for residence 1 year ago whereas Census 2000 asked for residence 5 years ago.

Component ID: #ti1086301519

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Means of Transportation to Work

Compare

The ACS excludes taxicabs in the tabulation category of "public transportation" and includes them in the category "taxicab, motorcycle, bicycle or other means." However, Census 2000 includes taxicabs in the "public transportation" tabulation category.

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Compare

Compare

The ACS excludes taxicabs in the tabulation category of "public transportation" and includes them in the category "taxicab, motorcycle, bicycle or other means." However, Census 2000 includes taxicabs in the "public transportation" tabulation category.

Place of Work

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Private Vehicle Occupancy

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Time Leaving Home

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Travel Time to Work

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Component ID: #ti1379704526

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Relationship to Householder

Compare

The ACS used a joint relationship/marital status edit and Census 2000 did not. Also, Census 2000 provided more response categories than the ACS.

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Compare with Caution

The “Child” and “In-law” categories were expanded in the 2008 ACS questionnaire. Use caution when comparing these categories between the 2007 ACS 1-year and 2008 ACS 1-year. See the "Changes in the Relationship Categories Between 2007 and 2008" [PDF - <1.0 MB] for more information on category changes and comparisons. Changes in the questionnaire format and data capture procedures between 2007 and 2008 have resulted in changes in the total number of same-sex unmarried partners in 2008. The Census Bureau believes the change is due to reports of same sex spouses, which are changed to unmarried partner in the editing process. For more information about same-sex unmarried partners, go here [PDF - <1.0 MB].

Compare

The ACS used a joint relationship/marital status edit and Census 2000 did not. Also, Census 2000 provided more response categories than the ACS.

Component ID: #ti1673107533

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Grandparents as Caregivers

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Component ID: #ti1501111749

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Household/Family Type

Compare

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Compare with Caution

Changes in the questionnaire format and data capture procedures between the 2007 and 2008 ACS have resulted in changes in the number of reported same-sex spouses and hence the total number of same-sex unmarried partners in 2008. All comparisons should be made with caution due to these formatting and data capture changes. For more information about same-sex unmarried partners, go here [PDF - <1.0 MB].

Compare
Subfamilies

Compare with Caution

Census 2000 had more detailed relationship categories used to derive estimates of subfamilies than the ACS.

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Compare

Compare with Caution

Census 2000 had more detailed relationship categories used to derive estimates of subfamilies than the ACS.

Component ID: #ti1207708742

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Marital Status

Compare

The ACS used a joint relationship/marital status edit and Census 2000 did not.

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Compare

Compare

The ACS used a joint relationship/marital status edit and Census 2000 did not.

Marital History

Do Not Compare

The questions were not asked in Census 2000.

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Do Not Compare

The questions were not asked in 2007 ACS

N/A

Component ID: #ti914305735

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Fertility

Do Not Compare

The question was not asked in Census 2000.

No comparable detailed tables published

Compare

Do Not Compare

The question was not asked in Census 2000.

Component ID: #ti620902728

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Type of School & School Enrollment

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The ACS reference period was 3 months preceding the date of interview, while the Census 2000 reference period was any time since February 1, 2000.

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Compare

The ACS reference period was 3 months preceding the date of interview, while the Census 2000 reference period was any time since February 1, 2000.

Component ID: #ti327499721

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Educational Attainment

Compare

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Compare with Caution

New questions were added to the 2008 ACS CATI/CAPI instrument. Respondents who received a high school diploma, GED or equivalent were also asked if they had completed any college credit. Therefore, data users may notice a decrease in the number of high school graduates relative to previous years because those people are now being captured in the "Some college credit , but less than 1 year of college credit" or "1 or more years of college credit, no degree" categories. For more information see the report titled Report P.2.b: Evaluation Report Covering Educational Attainment.

Compare

Component ID: #ti34096714

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Ability to Speak English

Compare

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Compare with Caution
(estimates of Spanish speaking)

Changes to collection of data on Hispanic origin may have affected some language characteristics. The observed increase in the native Hispanic population speaking English "very well" is larger than anticipated and should be interpreted with caution. In some cases the overall English language ability in the population may have been affected. See the section on Hispanic Origin (03) for more information. For more information about the changes in the estimates, go here.

Compare
Language Spoken at Home

Compare

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Compare with Caution
(estimates of Spanish speaking)

Changes to collection of data on Hispanic origin may have affected some language characteristics. The observed increase in the native Hispanic population speaking only English at home is larger than anticipated and should be interpreted with caution. In some cases the overall level of Spanish speaking in the population may have been affected. See the section on Hispanic Origin (03) for more information. For more information about the changes in the estimates, go here.

Compare

Component ID: #ti259306293

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Poverty Status of Families and People in Families

Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). For example, the 2008 ACS 1-year data reflect incomes over 2007-2008 and the 2006-2008 ACS 3-year data reflect incomes over 2005-2008. In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, download Income in the American Community Survey: Comparison to Census 2000. For specific questions and answers about sources of poverty data, see the Questions and Answers About Sources of Poverty Data [PDF - <1.0 MB].

table crosswalk

Compare with Caution

As ACS data are collected every month of the year, adjacent years will have some reference months in common. Hence, comparing the 2008 ACS 1-year with the 2007 ACS 1-year estimates is not an exact comparison of the economic conditions in 2008 with those in 2007. For a discussion of this and related issues, see Hogan, Howard, "Measuring Population Change Using the American Community Survey," Applied Demography in the 21st Century, Steven H. Murdock and David A. Swanson eds., Springer Netherlands, 2008. For specific questions and answers about sources of poverty data, see the Questions and Answers About Sources of Poverty Data [PDF - <1.0 MB].

N/A
Poverty Status of All People in the Poverty Universe

Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). For example, the 2008 ACS 1-year data reflect incomes over 2007-2008 and the 2006-2008 ACS 3-year data reflect incomes over 2005-2008. In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, download Income in the American Community Survey: Comparison to Census 2000. For specific questions and answers about sources of poverty data,

see the Questions and Answers About Sources of Poverty Data [PDF - <1.0 MB].

table crosswalk

Compare with Caution

As ACS data are collected every month of the year, adjacent years will have some reference months in common. Hence, comparing the 2008 ACS 1-year with the 2007 ACS 1-year estimates is not an exact comparison of the economic conditions in 2008 with those in 2007. For a discussion of this and related issues, see Hogan, Howard, "Measuring Population Change Using the American Community Survey," Applied Demography in the 21st Century, Steven H. Murdock and David A. Swanson eds., Springer Netherlands, 2008. For specific questions and answers about sources of poverty data, see the Questions and Answers About Sources of Poverty Data [PDF - <1.0 MB].

Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). For example, the 2008 ACS 1-year data reflect incomes over 2007-2008 and the 2006-2008 ACS 3-year data reflect incomes over 2005-2008. In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, see the Income in the American Community Survey: Comparison to Census 2000. For specific questions and answers about sources of poverty data, see the Questions and Answers About Sources of Poverty Data [PDF - <1.0 MB].

Component ID: #ti552709300

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Hearing / vision difficulty Do Not Compare

The 2008 ACS disability questions are different from the Census 2000 disability questions, thus comparisons cannot be made. For information about definitions of disability in the ACS, Census 2000 and other Census Bureau surveys,
see the Census Bureau's disability site.

No comparable detailed tables published

Do Not Compare

The 2008 ACS disability questions are different from the 2007 and prior ACS disability questions, thus comparisons cannot be made. For information about definitions of disability in the ACS, Census 2000 and other Census Bureau surveys,
see the Census Bureau's disability site.

N/A
Cognitive / Ambulatory / Self-care difficulty Do Not Compare

The 2008 ACS disability questions are different from the Census 2000 disability questions, thus comparisons cannot be made. For information about definitions of disability in the ACS, Census 2000 and other Census Bureau surveys, see the Census Bureau's disability site.

No comparable detailed tables published

Do Not Compare

The 2008 ACS disability questions are different from the 2007 and prior ACS disability questions, thus comparisons cannot be made. For information about definitions of disability in the ACS, Census 2000 and other Census Bureau surveys,
see the Census Bureau's disability site.

N/A
Independent Living difficulty Do Not Compare

The 2008 ACS disability questions are different from the Census 2000 disability questions, thus comparisons cannot be made. For information about definitions of disability in the ACS, Census 2000 and other Census Bureau surveys,
see the Census Bureau's disability site.

No comparable detailed tables published

Do Not Compare

The 2008 ACS disability questions are different from the 2007 and prior ACS disability questions, thus comparisons cannot be made. For information about definitions of disability in the ACS, Census 2000 and other Census Bureau surveys,
see the Census Bureau's disability site.

N/A

Component ID: #ti846112307

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Household and Family Incomes Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). For example, the 2008 ACS 1-year data reflect incomes over 2007-2008 and the 2006-2008 ACS 3-year data reflect incomes over 2005-2008. In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, see the Income in the American Community Survey: Comparison to Census 2000. The Census Bureau recommends using CPI-U-RS adjustment factors published annually by the Bureau of Labor Statistics (BLS) to adjust 1999 median, mean, and per capita income dollar amounts shown in Summary File 3 to 2008 dollars by multiplying the 1999 dollar amounts by the CPI-U-RS factor of 1.29219452. For CPI-U-RS inflation adjustment factors for other years see here. Furthermore, direct comparisons of income and earnings distributions between Census 2000 and the 2008 ACS are not possible due to inflation. Users interested in making distribution comparisons need to inflation adjust individual income records using the Public Use Microdata Samples (PUMS) files from Census 2000.

table crosswalk

Compare with Caution

As ACS data are collected every month of the year, adjacent years will have some reference months in common. Hence, comparing the 2008 ACS 1-year with the 2007 ACS 1-year estimates is not an exact comparison of the economic conditions in 2008 with those in 2007. For a discussion of this and related issues, see Hogan, Howard, "Measuring Population Change Using the American Community Survey," Applied Demography in the 21st Century, Steven H. Murdock and David A. Swanson eds., Springer Netherlands, 2008.

N/A
Sources of Income (households) Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, see the Income in the American Community Survey: Comparison to Census 2000. The Census Bureau recommends using CPI-U-RS adjustment factors published annually by the Bureau of Labor Statistics (BLS) to adjust 1999 median, mean, and per capita income dollar amounts shown in Summary File 3 to 2008 dollars by multiplying the 1999 dollar amounts by the CPI-U-RS factor of 1.29219452. For CPI-U-RS inflation adjustment factors for other years see here.

table crosswalk

Compare with Caution

As ACS data are collected every month of the year, adjacent years will have some reference months in common. Hence, comparing the 2008 ACS 1-year with the 2007 ACS 1-year estimates is not an exact comparison of the economic conditions in 2008 with those in 2007. For a discussion of this and related issues, see Hogan, Howard, "Measuring Population Change Using the American Community Survey," Applied Demography in the 21st Century, Steven H. Murdock and David A. Swanson eds., Springer Netherlands, 2008.

N/A
Income, Sources of Income N/A N/A

Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). For example, the 2008 ACS 1-year data reflect incomes over 2007-2008 and the 2006-2008 ACS 3-year data reflect incomes over 2005-2008. In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, see the Income in the American Community Survey: Comparison to Census 2000.

Direct comparisons of income and earnings between Census 2000 and the 2008 ACS are not possible due to inflation. The Census Bureau recommends using CPI -  U-RS adjustment factors published annually by the Bureau of Labor Statistics (BLS) to adjust 1999 median and mean income dollar amounts shown in Summary File 3 to 2008 dollars by multiplying the 1999 dollar amounts by the CPI-U-RS factor of 1.29219452. For CPI-U-RS inflation adjustment factors for other years, see here. Users interested in making distribution comparisons need to inflation adjust individual income records using the Public Use Microdata Samples (PUMS) files from Census 2000.

Component ID: #ti1139515314

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Per Capita Income, Earnings (people), and Income (people)

Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). For example, the 2008 ACS 1-year data reflect incomes over 2007-2008 and the 2006-2008 ACS 3-year data reflect incomes over 2005-2008. In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, see the Income in the American Community Survey: Comparison to Census 2000. The Census Bureau recommends using CPI-U-RS adjustment factors published annually by the Bureau of Labor Statistics (BLS) to adjust 1999 median, mean, and per capita income dollar amounts shown in Summary File 3 to 2008 dollars by multiplying the 1999 dollar amounts by the CPI-U-RS factor of 1.29219452. For CPI-U-RS inflation adjustment factors for other years see here. Furthermore, direct comparisons of income and earnings distributions between Census 2000 and the 2008 ACS are not possible due to inflation. Users interested in making distribution comparisons need to inflation adjust individual income records using the Public Use Microdata Samples (PUMS) files from Census 2000."

table crosswalk

Compare with Caution

As ACS data are collected every month of the year, adjacent years will have some reference months in common. Hence, comparing the 2008 ACS 1-year with the 2007 ACS 1-year estimates is not an exact comparison of the economic conditions in 2008 with those in 2007. For a discussion of this and related issues, see Hogan, Howard, "Measuring Population Change Using the American Community Survey," Applied Demography in the 21st Century, Steven H. Murdock and David A. Swanson eds., Springer Netherlands, 2008. Also, the Census Bureau introduced an improved sequence of labor force questions in the 2008 ACS questionnaire. This impacted the number of full-time, year-round workers. Accordingly, we recommend using caution when making labor force data comparisons from 2008 or later with data from prior years. For more information on these questions and their evaluation in the 2006 ACS Content Test, see the Evaluation Report Covering Employment Status and the Evaluation Report Covering Weeks Worked. Additional information can also be found here.

Compare with Caution

The ACS collects data throughout the year on an on-going, monthly basis and asks for a respondent's income over the "past 12 months." Census 2000, however, collected the income data for a fixed period of time -- "during 1999" (the last calendar year). For example, the 2008 ACS 1-year data reflect incomes over 2007-2008 and the 2006-2008 ACS 3-year data reflect incomes over 2005-2008. In a comparison study between Census 2000 income data and the 2000 ACS, income collected in Census 2000 was found to be about 4 percent higher than that in the 2000 ACS. For more information on the differences of income in the ACS and Census 2000, see the Income in the American Community Survey: Comparison to Census 2000.

Direct comparisons of income and earnings between Census 2000 and the 2008 ACS are not possible due to inflation. The Census Bureau recommends using CPI-U-RS adjustment factors published annually by the Bureau of Labor Statistics (BLS) to adjust 1999 median, mean, and per capita income dollar amounts shown in Summary File 3 to 2008 dollars by multiplying the 1999 dollar amounts by the CPI-U-RS factor of 1. 29219452. For CPI-U-RS inflation adjustment factors for other years. see here. Users interested in making distribution comparisons need to inflation adjust individual income records using the Public Use Microdata Samples (PUMS) files from Census 2000.>

Component ID: #ti995553124

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Period of Military Service

Compare

Since Census 2000, the period of military service categories on the ACS questionnaire were updated to: 1) include the most recent period "September 2001 or later;" 2) list all "peace time" periods without showing a date-breakup in the list; and 3) update the Korean War and World War II dates to match the official dates as listed in US Code, Title 38. While the response categories differ slightly from those in Census 2000, data from the two questions can still be compared to one another.

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Compare

Compare

Since Census 2000, the period of military service categories on the ACS questionnaire were updated to: 1) include the most recent period "September 2001 or later;" 2) list all "peace time" periods without showing a date-breakup in the list; and 3) update the Korean War and World War II dates to match the official dates as listed in US Code, Title 38. While the response categories differ slightly from those in Census 2000, data from the two questions can still be compared to one another.

Veteran Status

Compare

The ACS has two separate questions, whereas in Census 2000, it was a two part question. However, the actual questions remain the same.

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Compare

Compare

The ACS has two separate questions, whereas in Census 2000, it was a two part question. However, the actual questions remain the same.

Service-Connected Disability Status and Ratings

Do Not Compare

The question was not asked in Census 2000.

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Do Not Compare

The question was not asked in the 2007 ACS.

N/A

Component ID: #ti702150117

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Food Stamp Receipt

Do Not Compare

The question was not asked in Census 2000 thus comparisons cannot be made.

No comparable detailed tables published

Compare with Caution(Food Stamp Receipt)

The wording of the food stamp question was revised in the 2008 ACS to ask respondents if they received "food stamps or a food stamp benefit card". Data users may see an increase in food stamp recipiency from the 2007 ACS 1-year estimates to the 2008 ACS 1-year estimates as a result of the questionnaire change. For more detailed information, see the Evaluation Report Covering Receipt of Food Stamps.

Do Not Compare (Food Stamp Benefit Amount)

The question was not asked in the 2008 ACS.

Do Not Compare

The question was not asked in Census 2000 thus comparisons cannot be made.

Component ID: #ti408747110

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Employment Status

Compare with Caution

The reference periods are different due to year-round ACS data collection. The ACS reference period is the week prior to the respondent completing the interview, or the field representative conducting the interview. Because questionnaires are mailed-out and field interviews are conducted throughout the year, there is a revolving reference period. For Census 2000, the reference period was the week prior to Census Day (April 1, 2000). The Census 2000 Summary File 3 (SF3) labor force data for some places where colleges are located appear to overstate the estimates of people in the labor force, the unemployed, and the percent unemployed because of data capture errors.table crosswalk

Compare with Caution

The Census Bureau introduced an improved sequence of labor force questions in the 2008 ACS questionnaire. Accordingly, we recommend using caution when making labor force data comparisons from 2008 or later with data from prior years. For more information on these questions and their evaluation in the 2006 ACS Content Test,

see the Evaluation Report Covering Employment Status and
the "Evaluation Report Covering Weeks Worked. Additional information can also be found on the
at Labor Force Statistics website.

Compare with Caution

The reference periods are different due to year-round ACS data collection. The ACS reference period is the week prior to the respondent completing the interview, or the field representative conducting the interview. Because questionnaires are mailed-out and field interviews are conducted throughout the year, there is a revolving reference period. For Census 2000, the reference period was the week prior to Census Day (April 1, 2000). The Census 2000 Summary File 3 (SF3) labor force data for some places where colleges are located appear to overstate the estimates of people in the labor force, the unemployed, and the percent unemployed because of data capture errors.

Hours Worked

Compare

The ACS reference period is 12 months preceding the date of interview, while the Census 2000 reference period was the 1999 calendar year.

No comparable detailed tables published

Compare

Compare

The ACS reference period is 12 months preceding the date of interview, while the Census 2000 reference period was the 1999 calendar year.

Weeks Worked

Compare

The ACS reference period is 12 months preceding the date of interview, while the Census 2000 reference period was the 1999 calendar year.

No comparable detailed tables published

Compare with Caution

The Census Bureau introduced an improved sequence of labor force questions in the 2008 ACS questionnaire. Accordingly, we recommend using caution when making labor force data comparisons from 2008 or later with data from prior years. For more information on these questions and their evaluation in the 2006 ACS Content Test, see

the Evaluation Report Covering Employment Status and the Evaluation Report Covering Weeks Worked. Additional information can also be found on the
at Labor Force Statistics website.

Compare

The ACS reference period is 12 months preceding the date of interview, while the Census 2000 reference period was the 1999 calendar year.

Component ID: #ti115344103

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Class of Worker

Compare with Caution

The ACS median earnings Class of Worker tables combine "Unpaid family workers" with "Self-employed in own not incorporated business workers." The Census 2000 tables use different tabulation categories than the ACS. Also, the Census 2000 tables did not include the "full-time, year-round" population and there were no median earnings Class of Worker tables. Thus, comparisons cannot be made for this population or characteristic.

table crosswalk

Compare with Caution

The 2008 ACS median earnings Class of Worker tables combine "Unpaid family workers" with "Self-employed in own not incorporated business workers," while 2007 ACS tables list these categories separately.

Compare with Caution

The ACS median earnings Class of Worker tables combine "Unpaid family workers" with "Self-employed in own not incorporated business workers." The Census 2000 tables use different tabulation categories than the ACS. Also, the Census 2000 tables did not include the "full-time, year-round" population and there were no median earnings Class of Worker tables. Thus, comparisons cannot be made for this population or characteristic.

Industry and Occupation

Compare with Caution

The 2008 ACS industry codes are 4-digit codes based on the 2007 North American Industry Classification System (NAICS). Census 2000 codes are 3-digit codes based on the NAICS 1997. Codes and descriptions, particularly within the Electronic Shopping, Wholesale, and Information categories changed. Also, the tabulations from Census 2000 did not include the "full-time, year-round" population or median earnings by Industry or Occupation. Thus, comparisons cannot be made for this population or characteristic.

table crosswalk

Compare with Caution

The 2007 ACS 1-year industry data are coded using the 2002 North American Industry Classification System (NAICS) while the 2008 ACS 1-year industry data are coded using the NAICS 2007. Codes and descriptions in the Information sector changed: "Broadcasting and telecommunications" and "Internet publishing and internet service providers" were deleted and "Broadcasting, internet publishing, and telecommunications services" was added.

Compare with Caution

The 2008 ACS industry codes are 4-digit codes based on the 2007 North American Industry Classification System (NAICS). Census 2000 codes are 3-digit codes based on the NAICS 1997. Codes and descriptions, particularly within the Electronic Shopping, Wholesale, and Information categories changed. Also, the tabulations from Census 2000 did not include the "full-time, year-round" population or median earnings by Industry or Occupation. Thus, comparisons cannot be made for this population or characteristic.

Component ID: #ti178058904

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Bedrooms Compare with Caution

Changes made to the 2008 ACS Bedrooms question involving the wording as well as the response option resulted in a noticeable increase in the "No bedroom" category and a decrease in the "1 bedroom" to "3 bedrooms" categories. For more detailed information about these changes, see the Bedrooms section of the Subject Definitions [PDF - <1.0 MB].

table crosswalk

Compare with Caution

Caution should be used when comparing data for Bedrooms between the 2007 and 2008 ACS. Changes made to the 2008 ACS Bedrooms question involving the wording as well as the response option resulted in a noticeable increase in the "No bedroom" category and a decrease in the "1 bedroom" to "3 bedrooms" categories. For more detailed information about these changes, see the Bedrooms section of the Subject Definitions [PDF - <1.0 MB].

Compare with Caution

Changes made to the 2008 ACS Bedrooms question involving the wording as well as the response option resulted in a noticeable increase in the "No bedroom" category and a decrease in the "1 bedroom" to "3 bedrooms" categories. For more detailed information about these changes, see the Bedrooms section of the Subject Definitions [PDF - <1.0 MB].

Contract and Gross Rent Do Not Compare

For Census 2000, tables were not released for total renter-occupied units. The universe in the ACS is "renter occupied" whereas in Census 2000 the universe was "specified renter-occupied housing units," thus comparisons cannot be made.

No comparable detailed tables published

Compare

Do Not Compare

For Census 2000, tables were not released for total renter-occupied units. The universe in the ACS is "renter occupied" whereas in Census 2000 the universe was "specified renter-occupied housing units," thus comparisons cannot be made.

Cost of Utilities Compare

No comparable detailed tables published

Compare Compare
Gross Rent as a Percentage of Household Income Do Not Compare

For Census 2000, tables were not released for total renter-occupied units. The universe in the ACS is "renter occupied" whereas in Census 2000 the universe was "specified renter-occupied housing units," thus comparisons cannot be made.

No comparable detailed tables published

Compare

Do Not Compare

For Census 2000, tables were not released for total renter-occupied units. The universe in the ACS is "renter occupied" whereas in Census 2000 the universe was "specified renter-occupied housing units," thus comparisons cannot be made.

House Heating Fuel

Compare

table crosswalk

Compare Compare
Kitchen Facilities Do Not Compare
(estimates for Puerto Rico)

2008 ACS 1-year data on kitchen facilities will not be shown for Puerto Rico. The results of a cognitive evaluation of the Spanish language translation of the questions on kitchen facilities indicated that respondents of the 2008 Puerto Rico Community Survey may not have clearly understood the intent of the revised questions.

table crosswalk

Do Not Compare
(estimates for Puerto Rico)

2008 ACS 1-year data on kitchen facilities will not be shown for Puerto Rico. The results of a cognitive evaluation of the Spanish language translation of the questions on kitchen facilities indicated that respondents of the 2008 Puerto Rico Community Survey may not have clearly understood the intent of the revised questions.

Do not Compare (estimates for Puerto Rico)

2006-2008 ACS 3-year data on kitchen facilities will not be shown for Puerto Rico. The results of a cognitive evaluation of the Spanish language translation of the questions on kitchen facilities indicated that respondents of the 2008 Puerto Rico Community Survey may not have clearly understood the intent of the revised questions.

Compare with Caution
(estimates for the U.S.)

Changes made to the 2008 ACS question wording and translation to the Spanish questionnaire resulted in an inconsistency in the data. For more detailed information about these changes, see the Kitchen facilities section of
the Subject Definitions [PDF - <1.0 MB].

table crosswalk

Compare with Caution
(estimates for the U.S.)

Caution should be used when comparing data for Kitchen Facilities in certain areas between the 2007 and 2008 ACS. Changes made to the 2008 ACS question wording and translation to the Spanish questionnaire resulted in an inconsistency in the data. For more detailed information about these changes, see the Kitchen facilities section of the Subject Definitions [PDF - <1.0 MB].

Compare with Caution (estimates for the U.S.)

Changes made to the 2008 ACS question wording and translation to the Spanish questionnaire resulted in an inconsistency in the data. For more detailed information about these changes, see the Kitchen facilities section of
the Subject Definitions [PDF - <1.0 MB].

Monthly Rent Compare

No comparable detailed tables published

Compare Compare
Mortgage Status Compare

Data for 'with a mortgage' and 'without a mortgage' were released in Census 2000 for both total owner-occupied units and specified owner-occupied units. In the 2008 ACS, data are only released for owner-occupied units.

table crosswalk

Compare

Compare

Data for 'with a mortgage' and 'without a mortgage' were released in Census 2000 for both total owner-occupied units and specified owner-occupied units. In the 2006-2008 ACS, data are only released for owner-occupied units.

Occupants per Room Compare with Caution

Changes made to the 2008 ACS Rooms question involving the question wording as well as the response option resulted in a noticeable increase in the "1 room" category and a decrease in the "2 rooms" to "6 rooms" categories. For more detailed information about these changes, see the Rooms section of
the Subject Definitions [PDF - <1.0 MB].

table crosswalk

Compare with Caution

Caution should be used when comparing data for Occupants per Room between the 2007 and 2008 ACS. Changes made to the 2008 ACS Rooms question involving the wording as well as the response option resulted in a noticeable increase in the "1 room" category and a decrease in the "2 rooms" to "6 rooms" categories. For more detailed information about these changes, see the Rooms section of
the Subject Definitions [PDF - <1.0 MB].

Compare with Caution

Changes made to the 2008 ACS Rooms question involving the question wording as well as the response option resulted in a noticeable increase in the "1 room" category and a decrease in the "2 rooms" to "6 rooms" categories. For more detailed information about these changes, see the Rooms section of
the Subject Definitions [PDF - <1.0 MB].

Owner Costs as a Percentage of Household Income Compare with Caution

For Census 2000, tables with full distributions were released for total owner-occupied units but medians were not shown. When available, compare like universes.

Compare

Compare with Caution

For Census 2000, tables with full distributions were released for total owner-occupied units but medians were not shown. When available, compare like universes.

Plumbing Facilities Do Not Compare
(estimates for Puerto Rico)

2008 ACS 1-year data on plumbing facilities will not be shown for Puerto Rico. The results of a cognitive evaluation of the Spanish language translation of the questions on plumbing facilities indicated that respondents of the 2008 Puerto Rico Community Survey may not have clearly understood the intent of the revised questions.

table crosswalk

Do Not Compare
(estimates for Puerto Rico)

2008 ACS 1-year data on plumbing facilities will not be shown for Puerto Rico. The results of a cognitive evaluation of the Spanish language translation of the questions on plumbing facilities indicated that respondents of the 2008 Puerto Rico Community Survey may not have clearly understood the intent of the revised questions.

Do not Compare (estimates for Puerto Rico)

2006-2008 ACS 3-year data on plumbing facilities will not be shown for Puerto Rico. The results of a cognitive evaluation of the Spanish language translation of the questions on plumbing facilities indicated that respondents of the 2008 Puerto Rico Community Survey may not have clearly understood the intent of the revised questions.

Compare with Caution
(estimates for the U.S.)

Changes made to the 2008 ACS question wording and translation to the Spanish questionnaire resulted in an inconsistency in the data. For more detailed information about these changes, see the Plumbing facilities section of
the Subject Definitions [PDF - <1.0 MB].

table crosswalk

Compare with Caution
(estimates for the U.S.)

Caution should be used when comparing data for Plumbing Facilities in certain areas between the 2007 and 2008 ACS. Changes made to the 2008 ACS question wording and translation to the Spanish questionnaire resulted in an inconsistency in the data. For more detailed information about these changes, see the Plumbing facilities section of
the Subject Definitions [PDF - <1.0 MB].

Compare with Caution (estimates for the U.S.)

Changes made to the 2008 ACS question wording and translation to the Spanish questionnaire resulted in an inconsistency in the data. For more detailed information about these changes, see the Plumbing facilities section of
the Subject Definitions [PDF - <1.0 MB].

Real Estate Taxes Do Not Compare

The universe in the ACS is "owner occupied" whereas in Census 2000, the universe was "specified owner-occupied housing units," thus comparisons cannot be made.

No comparable detailed tables published
Compare

Do Not Compare

The universe in the ACS is "owner occupied" whereas in Census 2000, the universe was "specified owner-occupied housing units," thus comparisons cannot be made.

Rooms Compare with Caution

Changes made to the 2008 ACS Rooms question involving the wording as well as the response option resulted in a noticeable increase in the "1 room" category and a decrease in the "2 rooms" to "6 rooms" categories. For more detailed information about these changes, see the Rooms section of
the Subject Definitions [PDF - <1.0 MB].

table crosswalk

Compare with Caution

Caution should be used when comparing data for Rooms between the 2007 and 2008 ACS. Changes made to the 2008 ACS Rooms question involving the wording as well as the response option resulted in a noticeable increase in the "1 room" category and a decrease in the "2 rooms" to "6 rooms" categories. For more detailed information about these changes, see the Rooms section of
the Subject Definitions [PDF - <1.0 MB].

Compare with Caution

Changes made to the 2008 ACS Rooms question involving the wording as well as the response option resulted in a noticeable increase in the "1 room" category and a decrease in the "2 rooms" to "6 rooms" categories. For more detailed information about these changes, see the Rooms section of
the Subject Definitions [PDF - <1.0 MB].

Selected Monthly Owner Costs Compare with Caution

For Census 2000, tables with full distributions were released for total owner-occupied units but medians were not shown. When available, compare like universes.

table crosswalk

Compare

Compare with Caution

For Census 2000, tables with full distributions were released for total owner-occupied units but medians were not shown. When available, compare like universes.

Telephone Service Compare with Caution

Changes made to the 2008 ACS Telephone Service Availability question involving the structure of the question as well as including an instruction to include cell phones resulted in a noticeable increase in respondents answering "yes" to the question. For more detailed information about these changes, see the Telephone Service Available section of
the Subject Definitions [PDF - <1.0 MB].

No comparable detailed tables published

Compare with Caution

Caution should be used when comparing data for Telephone Service Availability between the 2007 ACS and the 2008 ACS. Changes made to the 2008 ACS Telephone Service Availability question involving the structure of the question as well as including an instruction to include cell phones resulted in a noticeable increase in respondents answering "yes" to the question. For more detailed information about these changes, see the Telephone Service Available section of
the Subject Definitions [PDF - <1.0 MB].

Compare with Caution

Changes made to the 2008 ACS Telephone Service Availability question involving the structure of the question as well as including an instruction to include cell phones resulted in a noticeable increase in respondents answering "yes" to the question. For more detailed information about these changes, see the Telephone Service Available section of
the Subject Definitions [PDF - <1.0 MB].

Tenure

Compare

table crosswalk

Compare Compare
Units in Structure

Compare

table crosswalk

Compare Compare
Vacancy Status Compare with Caution

The tabulation category "Rented or sold, not occupied" in Census 2000 is separated into two categories "Rented, not occupied" and "Sold, not occupied" in the ACS.

table crosswalk

Compare

Compare with Caution

The tabulation category "Rented or sold, not occupied" in Census 2000 is separated into two categories "Rented, not occupied" and "Sold, not occupied" in the ACS.

Value of Property Compare with Caution

The ACS allows a write-in for values while Census 2000 collected data in categories. For Census 2000, tables with full distributions, medians, and aggregate values were released for specified owner-occupied units as well as total owner-occupied units. When available, compare like universes.

table crosswalk

Compare

Changes made to the value question between the 2007 and 2008 ACS may result in an inconsistency in the value distribution for some areas. In 2008, the response option for the value question was a write-in. In 2007 and previous years, the value question included categorical response options with a write-in for values over $250,000. The presentation of the data is consistent between 2007 and 2008. For more information about this questionnaire change,
see the Evaluation Report Covering Property Value.

Compare with Caution

The ACS allows a write-in for values while Census 2000 collected data in categories. For Census 2000, tables with full distributions, medians, and aggregate values were released for specified owner-occupied units as well as total owner-occupied units. When available, compare like universes.

Vehicles Available

Compare

table crosswalk

Compare Compare
Year Moved In Compare

No comparable detailed tables published

Compare Compare
Year Structure Built

Compare

table crosswalk

Compare Compare

Component ID: #ti471461911

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Group Quarters Compare with Caution

The total group quarters (GQ) population in the ACS may not be comparable with Census 2000 because: 1) There are some Census 2000 GQ types that were out of scope in the ACS such as domestic violence shelters, soup kitchens, regularly scheduled mobile food vans, targeted non-sheltered outdoor locations, crews of maritime vessels and living quarters for victims of natural disasters. Also, there are some Census 2000 GQ type categories that are no longer valid (residential care facility providing "Protective Oversight," hospitals/wards for the chronically ill and hospitals/wards for drug/alcohol abuse). The exclusion of these GQ types from the ACS may result in a small bias in some ACS estimates to the extent that the excluded population is different from the included population. 2) A sample of GQ facilities throughout the United States and Puerto Rico was selected for the ACS. ACS controls the GQ sample at the state level only. Therefore, for lower levels of geography, particularly when there are relatively few GQs in a geographic area, the ACS estimate of the GQ population may vary from the estimate from Census 2000.

No comparable detailed tables published

Compare with Caution at National and State level. Do Not Compare below State level

The weighting for the group quarters (GQ) population is controlled at the state level, but not at sub-state levels. For this reason, users may observe greater fluctuations in year-to-year ACS estimates of the GQ population at sub-state levels than at state levels. The causes of these fluctuations typically are the result of either GQs that have closed or where the current population of the GQ is significantly different than the expected population as reflected on the sampling frame. Substantial changes in the ACS GQ estimates can impact ACS estimates of total population characteristics for areas where either the GQ population is a substantial proportion of the total population or where the GQ population may have very different characteristics than the total population as a whole. Users can assess the impact that year-to-year changes in sub-state GQ total population estimates have on the changes in total ACS population estimates by accessing Table B26001 on American Fact Finder. Users should also use their local knowledge to help determine whether the year-to-year change in the ACS estimate represents a real change in the GQ population or may be the result of the lack of adequate population controls for sub-state areas.

Compare with Caution

The total group quarters (GQ) population in the ACS may not be comparable with Census 2000 because: 1) there are some Census 2000 GQ types that were out of scope in the ACS such as domestic violence shelters, soup kitchens, regularly scheduled mobile food vans, targeted non-sheltered outdoor locations, crews of maritime vessels, and living quarters for victims of natural disasters, 2) there are some Census 2000 GQ type categories that are no longer valid (residential care facility providing "Protective Oversight," hospitals/wards for the chronically ill, and hospitals/wards for drug/alcohol abuse) and the exclusion of these GQ types from the ACS may result in a small bias in some ACS estimates to the extent that the excluded population is different from the included population, and 3) the ACS controls the GQ sample at the state level only, therefore, for substate geographies the ACS estimate of the GQ population may vary from the estimate from Census 2000, particularly when there are relatively few GQs in a geographic area.

Component ID: #ti764864918

Topic 2008 ACS 1-Year with Census 2000 2008 ACS 1-Year with 2007 ACS 1-Year 2006-2008 ACS 3-Year with Census 2000
Health Insurance Do Not Compare

The question was not asked in Census 2000. For more information about health insurance questions in the ACS and other Census Bureau surveys,
see Health Insurance website.

No comparable detailed tables published

Do Not Compare

The question was not asked in 2007 ACS. For more information about health insurance questions in the ACS and other Census Bureau surveys,
see the Health Insurance website.

 

Component ID: #ti1645158210

* Each subject area is listed with its 2-digit code. This code corresponds to the second and third characters of the ACS table number. For example, Table B08303 - Travel Time to Work - has the digits of "08" in the second and third position. This corresponds to the subject Journey to Work; Workers; and Commuting.

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