US Census Bureau#

Provider id: census. US Census Bureau home page.

Licence class

hosted-safe

Terms

terms page, read on 2026-10-15

Language-model use

allowed

Caching

allowed

Capabilities

fetch

Platforms

linux, macos, windows, pyodide

Extra

None (the default install).

Attribution#

Source: U.S. Census Bureau.

Required notice#

This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau.

Key and contact#

A key is read from the CENSUS_API_KEY environment variable, the .env file in the configuration directory or the OS keyring; see the keys guide.

Rate limits#

  • 5 requests per second

  • 500 requests per day

Hosts#

  • api.census.gov