US Census Bureau API

The US Census Bureau API provides access to demographic, economic, and geographic data from various Census Bureau surveys and programs. Data includes American Community Survey (ACS), Decennial Census, County Business Patterns, and more.

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Base URL: https://api.census.gov/data/
Auth: api_key
Endpoints: 19
Reachable: yes
CORS: unknown
Last checked: 2026-03-14 22:15:42.907442

Links

Homepage: https://www.census.gov/data/developers.html
API Base: https://api.census.gov/data/
Documentation:
SDKs:

100.0%

Uptime (7d)

632ms

Avg latency (7d)

17

Probes (7d)

Latency (7d)

Success Rate (7d)

Topics

ANALYTICS, GOVERNMENT, KNOWLEDGE

Endpoints

Method Path Summary Auth Last Status Latency
GET / List available datasets api_key 200 674ms
GET /2020/dec/pl 2020 Decennial Census Public Law 94-171 Data api_key 200 729ms
GET /data.json Dataset Catalog api_key 200 672ms
GET /{vintage}/{dataset}.json Query dataset data api_key — —
GET /{vintage}/{dataset}/examples.json Get API examples api_key 200 453ms
GET /{vintage}/{dataset}/geography.json List geography levels api_key 200 453ms
GET /{vintage}/{dataset}/groups.json List data groups api_key 200 446ms
GET /{vintage}/{dataset}/variables.json List dataset variables api_key 200 567ms
GET /{year}/acs/acs1 American Community Survey 1-Year Estimates api_key 400 451ms
GET /{year}/acs/acs1/geography.json ACS 1-Year Geography Levels api_key — —
GET /{year}/acs/acs1/variables.json ACS 1-Year Variables api_key — —
GET /{year}/acs/acs5 American Community Survey 5-Year Estimates api_key 200 819ms
GET /{year}/cbp County Business Patterns api_key 200 701ms
GET /{year}/nonemp Nonemployer Statistics api_key 200 714ms
GET /{year}/{dataset} Query census data for a specific dataset api_key — —
GET /{year}/{dataset}/examples Get example API calls for a dataset api_key — —
GET /{year}/{dataset}/geography List geography levels for a dataset api_key — —
GET /{year}/{dataset}/groups List variable groups for a dataset api_key 200 565ms
GET /{year}/{dataset}/variables List variables for a dataset api_key 200 459ms