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Census of Population and Housing, 2008 [United States]: American Community Survey (ACS)

PSC Data Catalog: Study Bibliographic Details:

Access to Files:Data and Documentation
Title:Census of Population and Housing, 2008 [United States]: American Community Survey (ACS)
Study Number:1257
Catalog Date:01/20/2010
Primary Investigator(s):United States Department of Commerce. Bureau of the Census
Access Restrictions:No
Abstract:This one year public use microdata sample (PUMS) for 2008 is a subset of the 2008 American Community Survey (ACS) and Puerto Rico Community Survey (PRCS) samples. It contains the same sample as the 1-year PUMS for 2008. Unless otherwise specified, the term “ACS” in this document will refer to both the ACS and PRCS. This 2008 PUMS is the second multiyear file published by the ACS. It contains three years of data for housing units and the population from households and the group quarters (GQ) population. The GQ population, housing units and population from households are all weighted to agree with the ACS counts which are an average over the three year period (2008). The ACS sample was selected from all counties across the nation, and all municipios in Puerto Rico. The 2008 PUMS data contain 3,875,950 housing unit records and 8,819,885 person records from households and 245,787 person records from GQs.

Estimates from the PUMS file are expected to be different from the previously released ACS estimates because they are subject to additional sampling error and further data processing operations. The additional sampling error is a result of selecting the PUMS housing and person records through an additional stage of sampling. In the public use file, the basic unit is an individual housing unit, except for the sample from GQs. For the GQ sample, the basic unit is the person. The population sample is defined as all persons living in households selected in the housing unit sample, plus the persons selected from the GQ sample. Note that microdata records in this sample do not contain names, addresses, or any information that can identify a specific housing unit, GQ or person.
Universe:The American Community Survey is limited to all household units, including the population living in institutions, college dormitories, and other group quarters, for geographic areas with a population of 65,000 or more.

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