Includes description of variables in each column for all sequence files.

The technical documents contain information about how to use the ACS Summary File

• Includes first-ever block group data from the ACS (only available on the Summary File).
• Includes all of the Detailed Tables published on the Census Bureau’s American FactFinder.
• Includes an additional 295 Detailed Tables [XLS - <1.0 MB] not available on American FactFinder.

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.