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Topics
Data & Maps
Surveys & Programs
Resource Library
2020 ACS 1-Year Experimental Data Release
Overview
Due to the impact of the COVID-19 pandemic, the Census Bureau changed the 2020 American Community Survey (ACS) release schedule. Instead of providing the standard 1-year data products, the Census Bureau released experimental estimates from the 1-year data. This includes a limited number of data tables for the nation, states, and the District of Columbia. The 2020 ACS 1-year experimental estimates are posted on the 2020 ACS 1-Year Experimental Data Tables page; they are not available on data.census.gov.
Data and Documentation
Experimental Data Product
2020 ACS 1-Year Experimental Data Tables
View the list of tables and supporting documentation for the 2020 ACS 1-year Experimental data release.
Data
2020 ACS 1-Year Public Use Microdata Sample with Experimental Weights
Access data and documentation for the 2020 ACS 1-year Public Use Microdata Sample (PUMS) with Experimental Weights.
Code Lists, Definitions, and Accuracy
View the detailed codes and definitions for variables, statistical testing, and an explanation of sample design, methodology, and accuracy for the ACS.
Sample Size and Data Quality
Explore quality measures for the American Community Survey, including sample size, response rates, coverage rates, and item allocation rates.
2019 ACS 1-Year PUMS with Experimental Weights
Learn more about the public-use experimental weight file for 2019 with the weights and identifiers needed to merge the weights to the 2019 ACS PUMS files.
Explore More
Working Paper
Addressing Nonresponse Bias in the ACS Using Administrative Data
Learn how the pandemic disrupted ACS data collection in 2020 and why the 2020 ACS 1-year estimates will be released as an experimental product.
Working Paper
An Assessment of the COVID-19 Pandemic’s Impact on the 2020 ACS 1-Year Data
Learn how the pandemic disrupted ACS data collection in 2020 and why the 2020 ACS 1-year estimates will be released as an experimental product.
2020 Data Release Schedule
Review the dates and components of the 2020 ACS release.
2020 Data Release New and Notable
Learn more about items of interest related to the 2020 ACS release.
Experimental Data Product
American Community Survey Experimental Data FAQs
Explore the most frequently asked questions about American Community Survey (ACS) Experimental Data.
News and Blogs
Press Release
Census Bureau Releases Experimental 2020 American Community Survey 1-Year Data
The U.S. Census Bureau today released experimental 1-year estimates from the American Community Survey (ACS).
Random Samplings Blog
An Overview of Addressing Nonresponse Bias in the American Community Survey During the COVID-19 Pandemic Using Administrative Data
In this blog we will discuss an important modification to the American Community Survey (ACS)’s weighting procedures for the 2020 experimental data.
Press Kit
2020 American Community Survey 1-Year Experimental Data Release
The Census Bureau released experimental estimates and products from the 1-year ACS data instead of the traditional 1-year estimates.
Press Release
Census Bureau to Host Webinar on Release of American Community Survey 1-Year Experimental Data
A webinar to explain and answer questions about the release of estimates from the 2020 ACS 1-year data using experimental weights.
Random Samplings Blog
Pandemic Impact on 2020 American Community Survey 1-Year Data
Analytical report detailing the decision to not release the standard 2020 1-year ACS data products.
Press Release
Census Bureau Releases Analytical Report on COVID-19 Impact on the 2020 American Community Survey
The U.S. Census Bureau today released an analytical report in advance of publishing experimental data from the ACS.
Random Samplings Blog
Collecting ACS Data From Group Quarters Amid the Pandemic
This blog explains how the pandemic disrupted our ability to collect American Community Survey data from group quarters.
Press Release
Census Bureau Announces Changes for 2020 ACS 1-Year Estimates
The U.S. Census Bureau will not release its standard 1-year estimates from the 2020 ACS ) because of the impacts of the COVID-19 pandemic on data collection.
Press Release
Statement on Differences Between 2020 Census and ACS 1-Year Estimates
The data collection methods for the 2020 Census and the ACS are different and so is the impact of the COVID-19 pandemic on the programs.
Press Release
Census Bureau Announces Key Dates for Upcoming Releases
The U.S. Census Bureau’s schedule for the release of 2020 Census redistricting data; the 2020 income, poverty and health insurance coverage statistics.
Random Samplings Blog
Adapting the American Community Survey Amid COVID-19
We adapted the American Community Survey amid the pandemic to keep both the nation informed, and our staff and the people who respond safe.
Related Information
Page Last Revised - May 27, 2022
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