ProPublica Nonprofit Explorer API

Free API for searching U.S. tax-exempt organizations and retrieving Form 990 financial filings by EIN.

Visit ProPublica Nonprofit Explorer API Docs

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Category	Nonprofit & Charity APIs
Authentication	No auth
Pricing	Free
Website	https://projects.propublica.org/nonprofits/api
Docs	https://projects.propublica.org/nonprofits/api
Last checked	2026-10-14
As JSON	/api/v1/directory/propublica-nonprofit-explorer-api.json