PASAR API

🇺🇸 US Census Bureau ~ demographics & economy API

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Free API key (register online); many datasets (ACS, Decennial, economic indicators), each with its own year/endpoint path and variable codes.

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# US Census Bureau ~ demographics & economy API needs an API key ~ get yours at:
# https://www.census.gov/data/developers/data-sets.html
curl 'https://api.census.gov/data/' \
  -H 'Authorization: Bearer YOUR_TOKEN'

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I'm integrating a United States API into my app.

API: US Census Bureau ~ demographics & economy API
Provider: U.S. Census Bureau
Auth: requires an API key (sign up: https://www.census.gov/data/developers/data-sets.html)
Pricing: free
Base URL: https://api.census.gov/data/
Important note: Free API key (register online); many datasets (ACS, Decennial, economic indicators), each with its own year/endpoint path and variable codes.

Source: U.S. Census Bureau (https://www.census.gov/data/developers/data-sets.html)
Source type: Official portal or provider docs
Endpoint type: Portal or multi-endpoint API
Integration difficulty: Needs API key
Last checked: 2026-07-05
Production caveat: Keep credentials server-side and confirm current limits, pricing, and webhook/error behaviour in the provider docs.

Help me set up the correct onboarding/authentication path and make the first valid request ~ explain exactly where credentials go and what must happen before production.

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