Data USA
FreeLiveLast verified 24 Sept 2026
US Census/government data — population, jobs, education, industry — queryable by state and year.
Example request
curl -s -A 'WildAPIsResearch/0.1 (+https://wildapis.com)' 'https://api.datausa.io/tesseract/data.jsonrecords?cube=acs_yg_total_population_5&drilldowns=State,Year&measures=Population&include=Year:2023&limit=5,0'
Free tier, in plain English
No key or sign-up, and no published rate limit; free for informational and educational use.
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