Census.gov - Free Government API (No Auth Required)

Overview

US Census Bureau data and statistics

Notes: Free US Census data API.

TL;DR

What it does: Census.gov: US Census Bureau data and statistics.

Quick start: https://api.census.gov/data/2020/dec/pl?get=NAME,P1_001N&for=state:*

No API key needed!

Try It Now

Call this URL to see what you get back:

https://api.census.gov/data/2020/dec/pl?get=NAME,P1_001N&for=state:*

Try This URL Now →

FAQ

Do I need an API key?: No! This API is completely free to use with no authentication required.
Is there a rate limit?: Most free APIs have generous limits. Check documentation for specifics.
Can I use this in a commercial project?: Yes, these APIs are free for both personal and commercial use. Check the documentation for any specific restrictions.
How do I get started?: Copy the example URL above and paste it into your browser or code. The response is in JSON format which you can parse in any programming language.

Code Examples

JavaScript Example

fetch('https://api.census.gov/data/2020/dec/pl?get=NAME,P1_001N&for=state:*')
  .then(res => res.json())
  .then(data => console.log(data))
  .catch(err => console.error(err));

Python Example

import requests

url = 'https://api.census.gov/data/2020/dec/pl?get=NAME,P1_001N&for=state:*'
response = requests.get(url)
data = response.json()
print(data)

API Details

API URL: https://www.census.gov/data/developers/data-sets.html
Documentation: https://www.census.gov/data/developers/data-sets.html
Category: Government
Authentication: Not Required
Geographic Coverage: US

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