Government & Open DataKey Required

Census.gov

US Census Bureau official demographic, social, and economic dataset APIs

Best for:Full-stack prototyping, developer tooling, production apps, and hackathons.
Verified: March 2026 • 200 OK
Official Documentation
Rate Limit
500 req/day
Auth
External Key
Security & CORS
HTTPS • CORS Enabled
Payload Format
JSON / REST

External Provider Registration Required

This service is protected by the provider and mandates an external developer account and API key. Grab your key from the official docs or browse our Zero-Setup Gateway Ready catalog for instant alternatives.

Query Params

Live Test Console & 3D Assistant

Launch our 3D companion to execute real-time REST JSON queries against this endpoint with zero CORS friction.

Quickstart Code Snippets

Copy-paste ready boilerplate for your tech stack.

Bypass browser CORS restrictions. Protected by in-memory RAM cache and automated circuit breaker.
Get Free API Key →
// Call via FreeAPI Smart Edge Gateway (In-Memory Cache + CORS Guard)
// Endpoint: https://findfreeapi.com/api/v1/gateway/censusgov

async function callCensusgov() {
  try {
    const response = await fetch("https://findfreeapi.com/api/v1/gateway/censusgov", {
      headers: {
        "Accept": "application/json",
        // "x-freeapi-key": "fapi_live_your_api_key" // FreeAPI Gateway Key
      }
    });

    if (!response.ok) {
      throw new Error(`Gateway HTTP error! status: ${response.status}`);
    }

    const data = await response.json();
    console.log("FreeAPI Live Data:", data);
  } catch (error) {
    console.error("FreeAPI Gateway Error:", error);
  }
}

callCensusgov();

Share with Devs & GitHub Badge

Share this public endpoint with your team or embed verified status badge in your README.md.

GitHub README.md Badge (Live SVG):
[![Census.gov - Free Public API](https://findfreeapi.com/api/badge/censusgov?style=flat)](https://findfreeapi.com/?utm_source=github_badge&utm_medium=readme&utm_campaign=badge_backlink)

Key Advantages (Pros)

  • Free Tier Available: Developers can test and build without entering credit card details.
  • Documented Rate Limit: 500 req/day.
  • HTTPS & CORS Enabled: Can be queried directly from client browsers or server backends.

Considerations & Limits (Cons)

  • External Key Required: Requires creating an account with the provider.
  • Rate Limited: Excessive rapid requests may receive HTTP 429 status.
  • Third-party SLA: Service uptime depends on the upstream provider.

Frequently Asked Questions (FAQ)

Technical and integration answers for Census.gov.

Yes, Census.gov is listed as a free endpoint on FreeAPI Directory with an allowance of: 500 req/day.

GitHub README Verified Badge

Embed this live verified badge in your project or repository.

Preview:Census.gov FreeAPI Verified Badge
[![Census.gov - Free Public API](https://findfreeapi.com/api/badge/censusgov?style=flat)](https://findfreeapi.com/?utm_source=github_badge&utm_medium=readme&utm_campaign=badge_backlink)
Official Service Provider Ownership: Census.gov

All data feeds, trademarks, and documentation belong directly to the original API provider. FreeAPI serves purely as a discovery index and documentation reference for developers.

DMCA / Takedown Request

Top Alternatives in Government & Open Data

Government & Open Data

Data.gov

US Federal Government open datasets spanning agriculture, energy, and economics

FeaturedAPI KEY1000 req/hour
Government & Open Data

Data.gov.uk

UK Government official open data repository for public spending and transit

ZERO-AUTHUnlimited
Government & Open Data

NASA

Official NASA open datasets including space photography and planetary telemetry

FeaturedAPI KEY1000 req/hour
Government & Open Data

FDA

US FDA drug approvals, adverse reaction events, and food safety recalls

FeaturedAPI KEY40 req/min