We are pleased to announce the release of the 2011-2015 American Community Survey (ACS) 5-year Public Use Microdata Sample (PUMS) files.
The ACS 5-year PUMS files show the full range of population and housing unit responses collected on individual ACS questionnaires for a subsample of ACS housing units and group quarters persons (approximately five percent of the United States population).
PUMS files allow data users to conduct a custom analysis, though the files also tend to be more complicated to use. Working with PUMS data generally involves downloading large datasets onto a local computer and analyzing them using statistical software such as R, SPSS, Stata, or SAS.
PUMS data can be accessed via the Census Bureau's FTP site, American FactFinder, or via the DataFerrett tool. (This tool is particularly useful for researchers who need a quick statistic or do not have access to statistical software.)
For more information, explore the new 2011-2015 ACS 5-year PUMS Technical Documentation:
We are pleased to announce the release of the 2011-2015 ACS Variance Replicate Estimate Tables. These tables include estimates, margins of error (MOEs), and 80 variance replicate estimates for selected ACS 5-year Detailed Tables. With the replicate estimates, advanced users can calculate MOEs when collapsing data within a table or across geographies. This method provides a more accurate MOE than available approximation formulas.
To access these estimates, visit the Variance Replicate Estimates page or through the Census Bureau's FTP site.
For more information, visit the Variance Replicate Estimate Tables documentation page:
The ACS provides reliable statistics that are used to make informed decisions about the future. These statistics are required by all levels of government to manage or evaluate a wide range of programs, but are also useful for research, business, education, journalism, and advocacy. If you have questions about this survey, please call our Customer Services Center on 1 (800) 923-8282.
American Community Survey Office
U.S. Census Bureau
Has anyone else encountered problems accessing the 2011-2015 U.S. person PUMs file? I have been trying unsuccessfully to open csv_pus.zip, and I think the zip file may be damaged. When I download and open the folder, one of the four CSV files (ss15pusa.csv) shows up as being HUGE. It's listed as being 800 petrabytes in the size column in the Windows folder view. As a result, I cannot copy or unzip the file due to hard drive limitations. Yet when I right-click on the file and view the properties, it says it's only 1,013,506 KB uncompressed. The other three files seem fine. I have tried downloading the zip file from both Factfinder and the FTP site without success. Census folks, is it possible to check on this and upload a new file if necessary? Thanks!
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