Census Microdata API

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Census Microdata API

You can find it in the API Discovery Tool for your dataset.

All data queries to the Census Data API now require an API key. Please cut and paste the Example Calls below into your web browser and replace YOUR_KEY_GOES_HERE with your personal API Key.

If you do not have an API Key, request one here. For more information: Watch Video.

CPS ASEC
  • ACS 1-Year PUMS
  • ACS 5-Year PUMS
  • CPS ASEC
  • CPS
  • CFS
  • VIUS
  • SIPP

CPS ASEC

Current Population Survey Annual Social and Economic Supplements (1992-2025)

2025 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2025/cps/asec/mar?get=NOW_COV,MARSUPWT,A_MARITL&for=state:01&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2025 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2024 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2024/cps/asec/mar?get=NOW_COV,MARSUPWT,A_MARITL&for=state:01&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2024 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2023 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2023/cps/asec/mar?get=NOW_COV,MARSUPWT,A_MARITL&for=state:01&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2023 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2022 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2022/cps/asec/mar?get=NOW_COV,MARSUPWT,A_MARITL&for=state:01&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2022 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2021 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2021/cps/asec/mar?get=NOW_COV,MARSUPWT,A_MARITL&for=state:01&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2021 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2020 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2020/cps/asec/mar?get=NOW_COV,MARSUPWT,A_MARITL&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2020 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2019 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2019/cps/asec/mar?get=NOW_COV,MARSUPWT,A_MARITL&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2019 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2018 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2018/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2018 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2017 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2017/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2017 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2016 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2016/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2016 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2015 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2015/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:*&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2015 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2014 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2014/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2014 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2013 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2013/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2013 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2012 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2012/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2012 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2011 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2011/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2011 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

2010 CPS Annual Social and Economic (March) Supplement

  • Example Call: api.census.gov/data/2010/cps/asec/mar?get=A_MARITL,MARSUPWT,HEA&for=state:1&A_HGA=39&key=YOUR_KEY_GOES_HERE
  • 2010 CPS Annual Social and Economic (March) Supplement Variables [ html | xml | json ]
  • Examples
  • Supported Geography

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Page Last Revised - May 20, 2026