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About

Available APIs

Guidance

Latest Releases

About Developers App Gallery Terms of Service Request an API Key Developers' Forum Geography Contact Us

View All Available APIs

Guidance for Developers Census Data API User Guide Census Microdata API User Guide Census Data API Discovery Tool Workshop: Basics of Using the Census API View All Video Tutorials

Latest Data Releases News Updates Contact Us

Census.gov /
Data /
Developers /
Available APIs /
American Community Survey 1-Year Supplemental Data (2014 - 2023) /
2021

2021 1-Year Supplemental Estimates

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Geography
Guidance for Developers
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Within Developers

About
App Gallery
Available APIs
Developers' Forum
Geography
Guidance for Developers
News
Terms of Service
Updates

2021 1-Year Supplemental Estimates

API Example Call: api.census.gov/data/2021/acs/acsse?get=NAME,K200101_001E&for=state:*&key=YOUR_KEY_GOES_HERE
2021 1-Year Supplemental Estimates Variables [ html | xml | json ]
ACS Technical Documentation
Examples and Supported Geography

Notes on ACS API Variable Formats
Notes on ACS API Variable Types
Notes on ACS Estimate and Annotation Values
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