Nonprofits in Mad River, CA
501(c)(3) nonprofit organizations — IRS Exempt Organizations Business Master File (2026-02)
Overview
Source: IRS Exempt Organizations BMFTotal Nonprofits
3
Total Assets
—
Orgs with >$1M Assets
0
Per 10K Residents
55.1
nonprofits
-54.9% vs <10K avg
Nonprofits by Category
Source: IRS / NTEE ClassificationRecreation & Sports1
Unknown1
Nonprofits per 10K Residents vs Similar Cities
Source: IRS BMF + Census ACSCompared to cities with population Under 10,000
Largest Nonprofits in Mad River
Source: IRS Exempt Organizations BMF| Organization | Category | Assets | Income | Est. |
|---|---|---|---|---|
| HUMBOLDT TRINITY RECREATION ALLIANCE | Recreation & Sports | $0 | $0 | 2023 |
Mad River, CA has 3 registered 501(c)(3) nonprofit organizations. The most common category is Unknown, with 1 organizations.0 That works out to 55.1 nonprofits per 10,000 residents. The oldest active nonprofit dates back to 1982.