Data / Nonprofits / Washington / Mercer Island / Recreation and sports
Recreation and sports nonprofits in Mercer Island, WA: 22 registered with the IRS
22 recreation and sports nonprofits are registered with the IRS in Mercer Island, WA, 19 of them 501(c)(3) charities; the 11 that report revenue took in $6.4 million. The largest by revenue: Mercer Island Country Club ($4.8 million), Mercer Island Lacrosse Club ($499,595), Caz Northwest ($282,427).
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Every organization, largest by revenue first
| Organization | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|
| Mercer Island Country Club | 501(c)(7) | 1983 | $4.8 million | $9 million | 2024-12 |
| Mercer Island Lacrosse Club | 501(c)(3) | 2003 | $499,595 | $125,060 | 2025-09 |
| Caz Northwest | 501(c)(3) | 2025 | $282,427 | $151,172 | 2025-09 |
| Mercer Island Equestrian Club | 501(c)(7) | 2006 | $163,861 | $79,845 | 2025-12 |
| Olympic Cascade Aquatics Foundation | 501(c)(3) | 2010 | $155,997 | $166,301 | 2025-08 |
| Mercer Island Womens Lacrosse Club | 501(c)(3) | 2023 | $155,040 | $183,212 | 2025-12 |
| Mercer Island Boys Basketball Booster Club | 501(c)(3) | 2003 | $147,037 | $70,817 | 2025-05 |
| Friars Golf Foundation | 501(c)(3) | 2019 | $74,883 | $107,707 | 2025-12 |
| Mudville Youth Baseball Club | 501(c)(3) | 2002 | $70,140 | $81,413 | 2025-12 |
| Washington Fly Fishing Club | 501(c)(7) | 2014 | $55,317 | $89,463 | 2025-12 |
| Eastside Youth Soccer Association | 501(c)(3) | 1995 | $23,044 | $137,399 | 2025-05 |
| Alpine Advocates Community | 501(c)(3) | 2023 | $0 | $0 | 2024-12 |
| Dink On Mercer Island | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Friends of Luther Burbank Park | 501(c)(3) | 2005 | $0 | $0 | 2025-12 |
| Jefferson Park Lawn Bowling Club Inc | 501(c)(3) | 1999 | $0 | $0 | 2024-11 |
| Mercer Island Boys Soccer Booster Club NFP | 501(c)(3) | 2015 | $0 | $0 | 2025-12 |
| Mercer Island Girls Soccer Booster Club NFP | 501(c)(3) | 2016 | $0 | $0 | 2025-12 |
| Mercer Island Mountain Biking Advocates | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Mercer Island Track Club | 501(c)(3) | 2003 | $0 | $0 | 2025-12 |
| Miggs Booster Club | 501(c)(3) | 2022 | $0 | $0 | 2024-12 |
| Mihs Boys Swive Booster Club | 501(c)(3) | 2018 | $0 | $0 | 2025-12 |
| Seattle Community Baseball Academy | 501(c)(3) | 2024 |
Other causes in Mercer Island, WA
- Education 38
- Philanthropy, voluntarism and grantmaking foundations 33
- Arts, culture and humanities 20
- Human services 14
- Religion-related 10
- Youth development 7
- International, foreign affairs and national security 7
- Environment 6
- Community improvement and capacity building 6
- Health care 6
- Public and societal benefit 3
Every nonprofit in Mercer Island, WA · Recreation and sports nonprofits across the state · Nonprofits in every city of the state
Read from the IRS Exempt Organizations Business Master File, updated by the IRS on October 24, 2026 and rebuilt here every morning. Revenue and assets are from each organization's latest filing as the IRS lists it; the IRS record is the official one. Organizations only: no people are named on these pages.