Data / Nonprofits / California / Clearlake
Nonprofits in Clearlake, CA: 59 registered with the IRS
59 nonprofits are registered with the IRS in Clearlake, CA, 44 of them 501(c)(3) charities; the 17 that report revenue took in $4 million. The largest by revenue: Highlands Senior Service Center Inc ($1.1 million), Habitat for Humanity Lake County Ca Inc ($800,018), Optimum Wellness Group Inc ($503,851). Most common causes: recreation and sports (4), human services (3), public and societal benefit (3).
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Every organization, largest by revenue first
| Organization | Category | Type | Since | Revenue | Assets | Filing |
|---|---|---|---|---|---|---|
| Highlands Senior Service Center Inc | Human services | 501(c)(3) | 1984 | $1.1 million | $861,284 | 2026-06 |
| Habitat for Humanity Lake County Ca Inc | 501(c)(3) | 2019 | $800,018 | $3.1 million | 2025-06 | |
| Optimum Wellness Group Inc | Mental health and crisis intervention | 501(c)(3) | 2022 | $503,851 | $89,500 | 2025-12 |
| Lake Links Inc | Human services | 501(c)(3) | 2020 | $463,267 | $431,071 | 2025-06 |
| Hope Is Rising Lake County Inc | Health care | 501(c)(3) | 2020 | $346,688 | $186,503 | 2023-12 |
| Red Bud Community Hospital Employees Assoc | 501(c)(5) | 1994 | $119,520 | $101,791 | 2025-12 | |
| Lower Lake Youth Football Inc | Recreation and sports | 501(c)(3) | 2024 | $98,496 | $112,339 | 2025-12 |
| Konocti Post 437 | Public and societal benefit | 501(c)(19) | 2019 | $92,434 | $84,270 | 2025-06 |
| Little League Baseball Inc | 501(c)(3) | 1967 | $89,959 | $22,758 | 2024-09 | |
| Konocti Senior Support Inc | Mental health and crisis intervention | 501(c)(3) | 2011 | $80,431 | $11,608 | 2025-06 |
| Clearlake Police K-9 Association | Crime and legal-related | 501(c)(3) | 2015 | $67,663 | $98,546 | 2025-12 |
| Clearlake Police Officers Association | Public safety, disaster preparedness and relief | 501(c)(3) | 2018 | $61,230 | $11,921 | 2025-12 |
| Veterans of Foreign Wars Department of California | 501(c)(19) | 1942 | $61,158 | $280,966 | 2025-12 | |
| Rotary International | 501(c)(4) | 1942 | $60,027 | $262,255 | 2024-06 | |
| South Lake Alliance Childrens Museum of Arts & Science of Clearl | Arts, culture and humanities | 501(c)(3) | 2005 | $20,663 | $40,882 | 2024-12 |
| Redbud Audubon Society | 501(c)(3) | 1975 | $6,902 | $34,372 | 2025-06 | |
| Lake Dayz Inc | Recreation and sports | 501(c)(3) | 2025 | $2,900 | $1,651 | 2023-12 |
| Affordable Housing Alternatives | Housing and shelter | 501(c)(3) | 2000 | $0 | $0 | 2025-12 |
| American Legion Auxiliary 437 Konocti | Public and societal benefit | 501(c)(19) | 2014 | $0 | $0 | 2026-06 |
| Bella Laguna Beach Corporation | 501(c)(7) | 1970 | $0 | $0 | 2025-06 | |
| Brooks Legacy Senior Dog Rescue | Animal-related | 501(c)(3) | 2025 | $0 | $0 | 2025-12 |
| California Federation of Womens Clubs | 501(c)(3) | 1998 | $0 | $0 | 2026-05 | |
| Calvary Chapel of Clear Lake Inc | 501(c)(3) | 1986 | ||||
| Christian Community Youth Center Church | 501(c)(3) | 1989 | ||||
| Claude Riebli Association | Human services | 501(c)(3) | 2016 | $0 | $0 | 2024-12 |
| Clear Lake Masonic Building Association | 501(c)(2) | 1975 | $0 | $0 | 2025-12 | |
| Clearlake Church of the Nazarene | 501(c)(3) | 1963 | ||||
| Clearlake Modelers Club Inc | Recreation and sports | 501(c)(7) | 2021 | $0 | $0 | 2025-12 |
| Clearlake Sda Christian School | 501(c)(3) | 1947 | ||||
| Clearlake United Methodist Community Church | 501(c)(3) | 1974 | ||||
| Crossroads Comm Church of Clearlake | Religion-related | 501(c)(3) | 2002 | |||
| First Assembly of God | 501(c)(3) | 1964 | ||||
| Free & Accepted Masons of California | 501(c)(8) | 1940 | $0 | $0 | 2025-12 | |
| Goat Events | Arts, culture and humanities | 501(c)(3) | 2026 | |||
| Guardian Angel Animal Sanctuary | Animal-related | 501(c)(3) | 2009 | $0 | $0 | 2024-12 |
| Hilltop Apostolic Church | Religion-related | 501(c)(3) | 2001 | |||
| Hope in Humanity Inc | Food, agriculture and nutrition | 501(c)(3) | 2024 | $0 | $0 | 2025-12 |
| Iglesia Torre Fuerte de Clearlake | Religion-related | 501(c)(3) | 2013 | |||
| Indigo Horizon | Environment | 501(c)(3) | 2026 | |||
| Knights of Columbus | 501(c)(8) | 1940 | $0 | $0 | 2026-06 | |
| Lake Area Rotary Club Association | Community improvement and capacity building | 501(c)(3) | 2014 | $0 | $0 | 2026-06 |
| Lake County Volunteer Firefighters Association | Public safety, disaster preparedness and relief | 501(c)(3) | 2004 | $0 | $0 | 2024-12 |
| Lakeshore Lioness Club Inc | 501(c)(4) | 1970 | $0 | $0 | 2025-06 | |
| Neighborhood Christian Fellowship of Clearlake Inc | 501(c)(3) | 1964 | ||||
| Order of the Eastern Star of California | 501(c)(10) | 2020 | ||||
| Our Community Our Seniors Corporation | Health care | 501(c)(3) | 2025 | $0 | $0 | 2024-12 |
| Pacific North Coast Moose Legion No 208 | 501(c)(8) | 1935 | $0 | $0 | 2026-04 | |
| Pastor of Our Lady Queen of Peace Catholic Church of Clearlake A Cor | 501(c)(3) | 1946 | ||||
| Praises of Zion Baptist Church | 501(c)(3) | 1955 | ||||
| Queen of Peace Catholic Church | 501(c)(3) | 1946 | ||||
| Redbud Healthcare District | 501(c)(3) | 1971 | ||||
| Science of Thought Church | 501(c)(3) | 1972 | ||||
| South Lake Basketball League | Recreation and sports | 501(c)(3) | 2022 | $0 | $0 | 2024-06 |
| St Johns Lutheran Church | 501(c)(3) | 1941 | ||||
| Swank Support Housing | Crime and legal-related | 501(c)(3) | 2022 | $0 | $0 | 2025-12 |
| Toastmasters International | 501(c)(3) | 1945 | $0 | $0 | 2025-12 | |
| Tri Faith Chapel Inc | 501(c)(3) | 1964 | ||||
| Veterans of Foreign Wars of the United States Auxiliary | Public and societal benefit | 501(c)(19) | 2000 | $0 | $0 | 2026-06 |
| Vietnam Veterans of America Inc | 501(c)(19) | 1984 | $0 | $0 | 2025-02 |
By cause in Clearlake, CA
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.