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Use of Ungeocoded Delivery Sequence File Records in the American Community Survey Sampling Frame
Use of Ungeocoded Delivery Sequence File Records in the American Community Survey Sampling Frame
The American Community Survey has been defining the area in which we use ungeocoded Delivery Sequence File records using information from Census 2000. We wanted to update this criterion to rely on more recent information. We evaluated criteria based upon the percentage of city-style addresses in a county.
We recommended that the American Community Survey use ungeocoded United States Postal Service Delivery Sequence File records in counties with at least 80 percent city-style addresses1. We found that only about 1.5 percent of the ungeocoded records would have a higher risk of duplication; this would be only about 23,600 of the approximately 1.5 million ungeocoded records in the 2011 American Community Survey supplemental sampling frame. With this criterion we will be using ungeocoded records in 2,865 counties, with a net gain of 33,000 records that we did not previously use.
This recommendation was implemented beginning in the 2012 Main Phase Unit Frame Universe creation.
Others in Series
Working Paper
Multiple Responses and Internet Returns that Identify as Vacant Units
"Conducted evaluation to identify how often respondents provide multiple responses and to provide information that the ACS managers needed."
Working Paper
2015 Envelope Mandatory Messaging Test
Learn about the results of a test conducted to address concerns about the mandatory message “Your Response Is Required By Law” used on ACS mail materials.
Working Paper
Analysis of the Household Roster Questions on the ACS
Learn more about the household roster questions that help respondents determine who should be included as members of their household.
Page Last Revised - October 8, 2021
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