Nonprofits in California
Nonprofits in California. Browse 229,931 public nonprofit profiles. Review organization identities, available filing years, and their complete CharitySense profiles.
Location refers to headquarters recorded in public sources, not an organization’s service area. Classification describes its reported category and does not assess its effectiveness.
Nonprofit profiles
- San Martin Society of San Fernando Valley
EIN 954674254 · Headquarters: BURBANK, CA, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- San Mateans for Affordable Housing
EIN 851030685 · Headquarters: SACRAMENTO, CA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ
- San Mateans for Affordable Housing Solutions
EIN 831157149 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N
- San Mateans for Neighborhood Protections & Affordable Housing
EIN 844480242 · Headquarters: SACRAMENTO, CA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990
- San Mateo Adult School Federation of Teachers Aft Cft Afl-cio Local
EIN 943110263 · Headquarters: San Mateo, CA, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo Arboretum Society Inc
EIN 510178003 · Headquarters: San Mateo, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo Cares
EIN 270205888 · Headquarters: San Mateo, CA, US · Human Services · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- San Mateo CC Federation of Teachers AFT 1493
EIN 942938915 · Headquarters: San Mateo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo Chamber of Commerce
EIN 940838880 · Headquarters: San Mateo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo Charities Inc
EIN 943324508 · Headquarters: San Mateo, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo Children Museum Foundation Inc
EIN 200721302 · Headquarters: San Mateo, CA, US · Arts, Culture & Humanities · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- San Mateo City Employees Assoc
EIN 931096544 · Headquarters: San Mateo, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- San Mateo City Parks and Recreation Foundation
EIN 274690768 · Headquarters: San Mateo, CA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo Cnty Chptr of the Amer Inst of Architect
EIN 942861627 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo Co Convention & Visitors Bureau
EIN 952748198 · Headquarters: BURLINGAME, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo Co Labor Publishing Co
EIN 946479160 · Headquarters: San Mateo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo Coastside Medical Reserve Corps Fdn
EIN 453653745 · Headquarters: Half Moon Bay, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2014 · Primary form: IRS Form 990-N
- San Mateo Consolidated Fire Department Firefighters Association
EIN 833045964 · Headquarters: REDWOOD CITY, CA, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo Consolidated Fire Department Funded HRA Trust
EIN 852617004 · Headquarters: San Mateo, CA, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo Council of Parent Participation Nursery Schools
EIN 943210213 · Headquarters: Belmont, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- San Mateo County African Violet Society
EIN 562483338 · Headquarters: San Mateo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County Association of Realtors Inc
EIN 943207822 · Headquarters: SAN MATEO, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Astronomical Society
EIN 942448416 · Headquarters: San Mateo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County Athletic Club
EIN 850975334 · Headquarters: Burlingame, CA, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- San Mateo County Bar Association
EIN 941638934 · Headquarters: Redwood City, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Bar Foundation
EIN 933149832 · Headquarters: Redwood City, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Chaplaincy
EIN 030559770 · Headquarters: Redwood City, CA, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- San Mateo County Chapter of the Womens Council of Realtors
EIN 954335948 · Headquarters: SAN MATEO, CA, USA · Housing & Shelter · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ
- San Mateo County China Trade Association
EIN 473106005 · Headquarters: MILLBRAE, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo County Chinese School
EIN 371468134 · Headquarters: MILLBRAE, CA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990
- San Mateo County Code 30 Foundation
EIN 462834289 · Headquarters: Redwood City, CA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo County Colleges Educational Housing Corporation
EIN 201880465 · Headquarters: San Mateo, CA, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Communications Managers Association
EIN 943020048 · Headquarters: Belmont, CA, US · Arts, Culture & Humanities · Latest available filing year: 2007 · Primary form: IRS Form 990-N
- San Mateo County Community College District Financing Corporation
EIN 201670207 · Headquarters: San Mateo, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- San Mateo County Community Colleges Foundation
EIN 946133905 · Headquarters: San Mateo, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Council of Engineers
EIN 943149297 · Headquarters: Redwood City, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County Critical Incident Stress Management Inc
EIN 421637015 · Headquarters: San Bruno, CA, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County Dental Auxiliary
EIN 946104998 · Headquarters: REDWOOD CITY, CA, US · Health Care · Latest available filing year: 2018 · Primary form: IRS Form 990-N
- San Mateo County Dental Society
EIN 941700499 · Headquarters: San Carlos, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- San Mateo County Dental Society Dental Health Foundation
EIN 942146658 · Headquarters: San Carlos, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County Deputy Sheriffs Association
EIN 943258924 · Headquarters: Redwood City, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Economic Development Association Incorporated
EIN 941295795 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Electrical Construction Industry Labor-Mgmnt Cooperation Trust
EIN 936296324 · Headquarters: Daly City, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- San Mateo County Exposition & Fair Association
EIN 941253708 · Headquarters: SAN MATEO, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Family Child Care Organization
EIN 883101738 · Headquarters: Burlingame, CA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo County Family Day Care Association Inc
EIN 942566159 · Headquarters: Belmont, CA, US · Human Services · Latest available filing year: 2012 · Primary form: IRS Form 990-N
- San Mateo County Farm Bureau
EIN 941210113 · Headquarters: HALF MOON BAY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Fellowship
EIN 941599460 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo County Fire Chiefs Association
EIN 943139750 · Headquarters: Portola Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- San Mateo County Firefighters Foundation
EIN 812140295 · Headquarters: REDWOOD CITY, CA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- San Mateo County Firefighters Local 2400 District 11
EIN 900770784 · Headquarters: Burlingame, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- San Mateo County Genealogical Society
EIN 942856483 · Headquarters: SAN MATEO, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County Health Foundation
EIN 943116070 · Headquarters: San Mateo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Hispanic Chamber of Commerce
EIN 943360209 · Headquarters: Millbrae, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- San Mateo County Historical Association
EIN 237186194 · Headquarters: REDWOOD CITY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Horsemens Association
EIN 237076143 · Headquarters: WOODSIDE, CA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo County Large Animal Evacuation Group
EIN 852910111 · Headquarters: Half Moon Bay, CA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Law Library Foundation
EIN 812230318 · Headquarters: REDWOOD CITY, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Medical Association
EIN 941121908 · Headquarters: Foster City, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Parks and Recreation Foundation
EIN 943306697 · Headquarters: SAN MATEO, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Probation and Detention Association
EIN 510214096 · Headquarters: Redwood City, CA, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Psycological Association
EIN 200561582 · Headquarters: SARATOGA, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- San Mateo County Realtors Foundation
EIN 943163126 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo County Retired Personnel Association
EIN 946408770 · Headquarters: El Granada, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County Rose Society Inc
EIN 942904543 · Headquarters: Foster City, CA, US · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo County School Boards Association
EIN 202775734 · Headquarters: Sacramento, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- San Mateo County School Superintendents Association
EIN 823484385 · Headquarters: San Mateo, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2019 · Primary form: IRS Form 990-N
- San Mateo County Sheriff's Office Associ
EIN 946089448 · Headquarters: REDWOOD CITY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Sheriffs Activities League
EIN 450617342 · Headquarters: REDWOOD CITY, CA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Sheriffs Office Foundation
EIN 991117508 · Headquarters: Redwood City, CA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N
- San Mateo County Sheriffs Office K9 Fund
EIN 474518030 · Headquarters: Redwood City, CA, US · Crime & Legal Related · Latest available filing year: 2015 · Primary form: IRS Form 990-N
- San Mateo County Trial Lawyers Assoc C/o Marina Ewald
EIN 942771419 · Headquarters: SACRAMENTO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo County Union Community Alliance
EIN 731656669 · Headquarters: San Mateo, CA, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo County Women Lawyers Section Educational Foundation
EIN 943255974 · Headquarters: SAN MATEO, CA, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo Crta - Scholarship and Educational Foundation Inc
EIN 320277541 · Headquarters: San Mateo, CA, US · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- San Mateo Dance Association
EIN 942911737 · Headquarters: San Mateo, CA, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N
- San Mateo Dog Training Club Inc
EIN 946104491 · Headquarters: SAN CARLOS, CA, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo Electrical Apprenticeship & Training Trust
EIN 237225581 · Headquarters: SAN JOSE, CA, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990
- San Mateo Firefighters Widows and Orphans Dba Mutual Aid Fund
EIN 946169238 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- San Mateo Garden Center
EIN 237222141 · Headquarters: SAN MATEO, CA, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo Gymnastics Boosters Inc
EIN 942595566 · Headquarters: BELMONT, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo Harley Owners Group
EIN 943398418 · Headquarters: Redwood City, CA, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N
- San Mateo Heritage Alliance Inc
EIN 882159434 · Headquarters: San Mateo, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo High School Athletic Boosters
EIN 463987449 · Headquarters: SAN MATEO, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo High School Bearcat Parent Teacher Organization
EIN 943373211 · Headquarters: SAN MATEO, CA, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- San Mateo High School Class of 2002
EIN 463344156 · Headquarters: Foster City, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo High School Drama Boosters
EIN 943123215 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo High School Music Boosters
EIN 942647133 · Headquarters: San Mateo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ
- San Mateo High School Pto and Foundation for Excellence
EIN 200027218 · Headquarters: SAN MATEO, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo Highlands Community Association
EIN 942926914 · Headquarters: San Mateo, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N
- San Mateo Hotel Employees and Restaurant Employees Welfare Fund
EIN 946081299 · Headquarters: SAN JOSE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990
- San Mateo Japanese Youth
EIN 946175520 · Headquarters: San Mateo, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N
- San Mateo Japanese-american Community Center
EIN 920194073 · Headquarters: San Mateo, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo Kendo Dojo
EIN 834156619 · Headquarters: San Mateo, CA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo Lodge 1112 Bpo Elks
EIN 940838965 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990
- San Mateo Masonic Temple Assoc Inc
EIN 940839075 · Headquarters: San Mateo, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo Master Marlins Inc
EIN 943084479 · Headquarters: San Mateo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N
- San Mateo Medical Center Volunteers
EIN 942332280 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ
- San Mateo National Little League
EIN 521245539 · Headquarters: SAN MATEO, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ
- San Mateo Nippon Gakuyen
EIN 941546519 · Headquarters: San Mateo, CA, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ