Tax-exempt organizations with a Dover, Delaware mailing address (IRS EO BMF)
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EIN, name, city, ZIP, NTEE activity code, 501(c) subsection, foundation code, ruling year, and IRS asset and income ranges for every organization in the IRS Exempt Organizations Business Master File extract for Delaware whose mailing address is in Dover. Street addresses are kept only under the rule in src/ingestion/nonprofits-config.ts; the "in care of" name is never stored.

Published by: Internal Revenue Service, Tax Exempt and Government Entities (Statistics of Income)
Source: https://www.irs.gov/pub/irs-soi/eo_de.csv, https://www.irs.gov/charities-non-profits/exempt-organizations-business-master-file-extract-eo-bmf
License: Public domain (U.S. government work)
Credit line: Internal Revenue Service, Exempt Organizations Business Master File extract.
Updated: Monthly
Covers: The current IRS extract; organizations the IRS removes drop off at the next good refresh
Area: Dover, Delaware mailing addresses (ZIPs 19901-19906 with a Dover city name), which reach outside city limits

A U.S. federal government work (17 U.S.C. 105), published by the IRS for public use. OpenDover redistributes only the columns stored here: no "in care of" names, and street addresses only under the residence rule.

Files
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- nonprofits.csv and nonprofits.json: ein, name, street, city, zip, address_rule, subsection, foundation, ntee_code, category, ruling_year, asset_band, income_band, tax_period, updated_at

Each file is built from OpenDover's database when you download it. In the CSV files, text that a spreadsheet would
treat as a formula (starting with =, +, @ or -) begins with an apostrophe so it opens as plain text. The JSON files
hold the values exactly.

This copy: 2026-11-08

More: https://opendover.org/data/irs-eo-bmf-dover-de/
API: https://api.opendover.org/v1/datasets/irs-eo-bmf-dover-de