Data USA

API

Free REST API for comprehensive US public data

Overview

The Data USA API offers free access to curated US federal public data (from sources like Census Bureau, BLS). It features RESTful endpoints: /api/data for custom queries (filter by geography, topic, year), /api/categories to browse domains (demographics, economy, education), and /api/attributes for metadata. Responses are JSON-formatted with structured results. Use cases include building interactive data visualizations, policy research, educational tools, or integrating US public data into citizen-facing apps or business analytics platforms.

Example Integration (JavaScript)

script.js JS


fetch('https://datausa.io/about/api/')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Key Features

RESTful architecture
JSON response format
No API key required
Comprehensive US federal data
Advanced query filtering options

Frequently Asked Questions

? Is Data USA API free to use?

Yes, the Data USA API is completely free for personal, educational, and commercial uses without any hidden costs.

? Does it require an API Key?

No, the Data USA API does not require an API key or authentication to access its public endpoints.

? What is the response format?

All responses from the Data USA API are in JSON format, including both data results and associated metadata for easy integration.

Top Alternatives

US Census Bureau API Search Google

BLS Public Data API Search Google

FRED Economic Data API Search Google

Tool Info

Pricing Free

Category Government

Platform Public API

Pros

⊕ Easy to integrate (no authentication)
⊕ Rich coverage of key US datasets
⊕ Well-documented endpoints
⊕ Free for all use cases
⊕ Structured metadata for parsing

Cons

⊖ Rate limits apply to high-frequency requests
⊖ Limited to US data only
⊖ No real-time updates (periodic federal data releases)
⊖ Some niche datasets may be unavailable