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Resource Library
Geography Reference Files
Geography Reference Files
Reference files give details about particular geographic areas. Reference files variously inform users of legal changes to entities, geographic boundary change notes, FIPS codes for places (and separately for school districts), and characteristics such as land area.
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1999 MA to 2003 CBSA
This reference file shows the relationship between 1999 MAs and 2003 CBSAs.
2006-2010 County Sets
The EEO county set combines multiple counties to meet the 50,000 person requirement.
2009 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2009 Census Bureau Region and Division Codes and State FIPS Codes.
2009 Population Estimates FIPS Codes
These are the 2009 FIPS Codes (State, County, MCD, and Incorporated Place).
2011 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2011 Census Bureau Region and Division Codes and State FIPS Codes.
2011 Population Estimates FIPS Codes
These are the 2011 FIPS Codes (State, County, MCD, and Incorporated Place).
2012 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2012 Census Bureau Region and Division Codes and State FIPS Codes.
2012 Population Estimates FIPS Codes
These are the 2012 FIPS Codes (State, County, MCD, and Incorporated Place).
2013 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2013 Census Bureau Region and Division Codes and State FIPS Codes.
2013 Population Estimates FIPS Codes
These are the 2013 FIPS Codes (State, County, MCD, and Incorporated Place).
2014 Census Bureau Region and Division Codes and State FIPS Codes
These are the 2014 Census Bureau Region and Division Codes and State FIPS Codes.
2014 Population Estimates FIPS Codes
These are the 2014 FIPS Codes (State, County, MCD, and Incorporated Place).
2015 Population Estimates FIPS Codes
These are the Vintage 2015 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.
2016 Population Estimates FIPS Codes
These are the Vintage 2016 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.
2017 Population Estimates FIPS Codes
These are the Vintage 2017 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.
2018 Population Estimates FIPS Codes
These are the Vintage 2018 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place FIPS Codes.
2019 Population Estimates FIPS Codes
These are the Vintage 2019 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.
2020 Address Count Listing Files
Here are the 2020 Address Count Listing Files.
2020 Population Estimates FIPS Codes
These are the Vintage 2020 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.
2021 Population Estimates FIPS Codes
These are the Vintage 2021 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.
2022 Population Estimates FIPS Codes
These are the Vintage 2022 Census Bureau Region and Division Codes, and State, County, Minor Civil Division, and Incorporated Place.
2022 SDRP Annotation Phase Listing Files
Here are the 2022 SDRP School District Listing Files for the Annotation Phase.
2023 SDRP Annotation Phase Listing Files
Here are the 2023 SDRP School District Listing Files for the Annotation Phase.
2024 SDRP Annotation Phase Listing Files
Here are the 2024 SDRP School District Listing Files for the Annotation Phase.
Block Assignment Files
View the available Block Assignment files from the Geography program.
Census Reference Files
Geographic Reference Files list codes for geographic entities. These include Relationship Files, Gazetteer Files, Block Assignment Files, and Tally Files.
Centers of Population
Information about the mean and median centers of population for the 2020 Census, 2010 Census and Census 2000.
County Adjacency File
View the available County Adjaceny files from the Geography program.
Current Address Count Listing Files
Here are the current Address Count Listing Files.
Current Address Count Listing Files
Here are the current Address Count Listing Files.
Gazetteer Files
View all the available Gazetteer files from the Geography Program.
Geographic Classifications - County Sets
View and download reference files on county sets for 2000.
Guide to 2010 State and Local Census Geography
These pages provide an overview of census geography and have information about key geographic concepts for each state as it relates to the 2010 Census.
Historical State Centers of Population by State for 1880-2020 Censuses
The concept of the center of population as used by the U.S. Census Bureau is that of a balance point.
Historical State Centers of Population by Year for 1880-2020 Censuses
Legal Boundary Change/Annexation Data
Review the annexations and legal boundary changes that have been reported to the BAS.
Page Last Revised - October 8, 2021
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