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Census.gov API

by Census.gov Free tier

The US Census Bureau provides various APIs and data sets on demographics and businesses

developer

Quick Reference

Base URL https://www.census.gov Auth type none Auth header # No auth required Rate limit See documentation Pricing Free tier available Free quota Completely free Documentation https://www.census.gov/data/developers/data-sets.html Endpoint status Live — HTTP 200 — endpoint is accessible805ms (checked Mar 29, 2026) Builder score C 57% builder-friendly
Pricing
90
Latency
76
Depth
18

Authentication

No authentication required

# No auth required

Pricing

Model freemium Starting price Free tier available Free quota Completely free

Free — open public API, no authentication required.

Key Endpoints

MethodPathDescription
GET / See documentation for endpoint reference

Sample Request

curl 'https://www.census.gov'

Sample Response

{}

Data sourced from API Map. Always verify pricing and rate limits against the official Census.gov documentation.