The American Community Survey (ACS) Summary File is a unique data product that includes all estimates and margins of error (MOE) from the Detailed Tables for all geographies published for the ACS. The ACS Summary File allows data users to download statistics for a large number of tables and geographic areas.
The Table-Based ACS Summary File provides a separate file containing both the estimates and MOE for all available geographies for a given Detailed Table. Data users only need to merge in geography labels to create complete tables.
Check out the Getting Started and data year tabs below for information and resources. The resources include instructions for merging the geography labels with each table via Excel or programs like SAS and Python.
The current format started in 2018 and is the only format available starting with the 2022 data release. Information about the original Sequence-Based Format, available for data years 2005 through 2021, is available on the ACS Summary File Sequence-Based Format page.