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Technical Documentation

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


Includes description of variables in each column for all sequence files and for the comma delimited version (.csv) of the geography file.

Appendices include the sequence number and restrictions for all tables, as well as summary levels available for each release.

Summary File User Tools

Table Shells

Contains table ID, line number, unique ID (table ID + Line Number), stub, and data release

Sequence Number/Table Number Lookup File

Contains information on the relationship between the sequences and the tables

1-year Lookup File

5-year Lookup File

zip SAS format [9.3 MB]
xls Excel format [<1.0 MB]
txt Text format [1.6 MB]

Simplified Geography Files

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.

SAS Programs

Contains SAS programs for each sequence per state, which can be used to convert each estimate and margin of error into SAS datasets with table stubs

Detailed example SAS program containing SAS macros which access the geography, estimate and margin of error data. It creates one table for all geographies from the ACS Summary File. Segments of the SAS codes can be used to convert geography files into SAS datasets.

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