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American Community Survey

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Downloadable data via FTP server

File Transfer Protocol (ftp) server

The Census Bureau produces downloadable American Community Survey (ACS) data files on the Census Bureau's file transfer protocol (ftp) server.

American Community Survey directories can be found easily on the ftp server by looking for "ACS" at the beginning of the directory name. The ACS directories contain:

Data Tables

Table shells /acs/downloads/shells/

Summary Files

  • 2005 - present (by year, e.g. acs2007)
  • The sequence number and table number lookup files for the 2011 ACS 1-year Summary File are available on the FTP site.

Public Use Microdata Sample (PUMS) Files

If you are using a ftp client, the server address is You do NOT need a user name and password. If prompted for one, use "anonymous" as the user name, and no password.

Files on the FTP server are intended for advanced users. For easy-to-use online data from the American Community Survey, visit the American FactFinder website

Source: U.S. Census Bureau | American Community Survey Office | Email ACS | Last Revised: April 13, 2015
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