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2016-2020 American Community Survey 5-year estimates are now available, including the Public Use Microdata Sample (PUMS) Files and Variance Replicate Estimate (VRE) Tables.

American Community Survey Data via FTP

The Census Bureau produces downloadable American Community Survey (ACS) data files, as well as other materials, on the Census Bureau's file transfer protocol (FTP) server.

Files on the FTP server are intended for advanced users. You can learn about other ways to access ACS data on the Data Tables & Tools page.

American Community Survey directories are located on the FTP server at www2.census.gov/programs-surveys/acs/. If you are using a FTP client, the server address is ftp2.census.gov. You do NOT need a user name and password. If prompted for one, use "anonymous" as the user name, and no password.The ACS directories contain:

Item
Year(s)
Link

Experimental Data

2020

programs-surveys/acs/experimental/

Summary Files

2005-present

programs-surveys/acs/summary_file/

Public Use Microdata Sample (PUMS) Files

1996-present

programs-surveys/acs/data/pums/

Variance Replicate Estimate Tables

2014-present

programs-surveys/acs/replicate_estimates/

Table Shells

2004-present

programs-surveys/acs/tech_docs/table_shells

Data Tables

1996-2004

program-surveys/acs/data/archive

ACS/Census Comparison Study

1999-2001

programs-surveys/acs/data/archive/acs_census_comparison/

Gulf Coast Study

2005

programs-surveys/acs/data/archive/gulf_coast_study_2005/

Multiyear Estimates Study

2005-2007

programs-surveys/acs/data/archive/multiyear_estimates_study/

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