M
API Matrix

Data USA API

⭐ Beginner's Pick Government / No Auth Required Beginner HTTPS
Free to Use Varies (check documentation)
92 Score
Grade A+
Visit Official Site Compare Alternatives

Overview

Data USA is a free, open-source platform that aggregates and visualizes U.S. public data from sources like the Census Bureau and Bureau of Labor Statistics. No API key is needed—you can query demographic, economic, and educational data directly with a simple URL. It is a great choice for beginners exploring American socioeconomic statistics.

💡

Beginner Tip

Query Data USA by specifying a measure and drilldowns in the URL to get exactly the public data you need—for example, population by state is a common first query.

Available Data

Use case: Integrate us public data data into web and mobile applications
Data USA data via REST API
JSON-formatted response data
Freely accessible without authentication

Example Response

JSON Response 
{
  "status": "success",
  "data": {
    "result": "Data from Data USA",
    "description": "US Public Data",
    "timestamp": "2025-01-15T10:00:00Z"
  }
}

Field Reference

data Array of data records matching the query parameters.
Nation Geographic drilldown value—the country, state, or place name.
Population Population count for the specified geography and year.
Year The year the data point corresponds to.
slug URL-friendly identifier for the geographic entity on the Data USA site.

Implementation Example 

// ⚠️ Note: This URL may be a documentation page. Check official docs for actual API endpoint.
const url = "https://datausa.io/about/api/";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

Empty data array The combination of drilldowns and measures does not match any available dataset.
✓ Check the Data USA API documentation for valid measure and drilldown combinations, or use the site's visualizations to discover valid queries.
400 Bad Request Misspelled measure or drilldown parameter name.
✓ Parameter names are case-sensitive—copy them exactly from the Data USA documentation or example URLs.
Slow response Querying a very large combination of drilldowns without filtering by year.
✓ Add year=latest or a specific year to limit the result set and speed up the response.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 20/20
🔒 Security 15/15
🛠 Developer XP 20/20
✓ Reliability 7/15
Response Time 187ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Government
Difficulty Beginner
Verified: 2026-04-04

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