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The Summary File Core Technical Document is now available as What ACS Summary File Data Users Need to Know.
Documentation on how to use the ACS Summary File with Excel or TIGER/Line Shapefiles
1-year Lookup File
5-year Lookup File
Contains basic geography information, including LOGRECNO, GEOID, and name, in an Excel file with tabs for the US, as well as each state or state equivalent. Compared to the standard geography files in .csv and .txt format, these simplified files contain only the geography variables needed to read the ACS Summary File into Excel.
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