Nonprofits in San Marcos, California

Nonprofits in San Marcos, California. Browse 437 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

  1. Rural Health Foundation Inc

    EIN 851262410 · Headquarters: San Marcos, CA, US · Health Care · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  2. San Diego Aces Disc Golf Association

    EIN 261802257 · Headquarters: San Marcos, CA, US · Recreation & Sports · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  3. San Diego Chinese Christian Chorale Inc

    EIN 811896305 · Headquarters: san marcos, CA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. San Diego County Court Employees Association

    EIN 912159290 · Headquarters: SAN MARCOS, CA, USA · Crime & Legal Related · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  5. San Diego County Senior Doubles Bowling Club

    EIN 812788809 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. San Diego Fire Dept Sports Club

    EIN 330434440 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. San Diego Hmong Heritage Inc

    EIN 991562223 · Headquarters: SAN MARCOS, CA, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. San Diego Inventors Forum Inc

    EIN 473542970 · Headquarters: San Marcos, CA, USA · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  9. San Diego North Economic Development Council

    EIN 330706621 · Headquarters: SAN MARCOS, CA, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. San Diego Pathfinders Lions Club

    EIN 463264774 · Headquarters: SAN MARCOS, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. San Diego Performing Arts Education

    EIN 831840332 · Headquarters: San Marcos, CA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  12. San Elijo College Incorporated

    EIN 611565622 · Headquarters: San Marcos, CA, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  13. San Elijo Elementary School PTO

    EIN 471181387 · Headquarters: San Marcos, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. San Elijo Hills Fire Safe Council Inc

    EIN 333664001 · Headquarters: SAN MARCOS, CA, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  15. San Elijo Hills Foundation

    EIN 201608139 · Headquarters: SAN MARCOS, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  16. San Elijo Hills Soccer Club

    EIN 611536806 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  17. San Elijo Middle School Band Booster Club

    EIN 201360655 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. San Elijo Middle School Pto

    EIN 201323571 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. San Francisco Region Management Association

    EIN 237134524 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. San Joaquin Valley Childrens Health Assn

    EIN 941312346 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  21. San Marcos Arts Council

    EIN 264219400 · Headquarters: San Marcos, CA, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  22. San Marcos Basketball

    EIN 923020274 · Headquarters: SAN MARCOS, CA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  23. San Marcos Boosters Club

    EIN 237351632 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. San Marcos Chamber of Commerce

    EIN 952475085 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  25. San Marcos Community Foundation

    EIN 330259068 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. San Marcos Community Youth Boosters

    EIN 330962579 · Headquarters: SAN MARCOS, CA, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. San Marcos Educators Assn Ctanea

    EIN 953448806 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. San Marcos Elementary School PTO

    EIN 471725335 · Headquarters: San Marcos, CA, USA · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  29. San Marcos Girls Softball League

    EIN 953156661 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. San Marcos High School Cheer Boosters

    EIN 833142134 · Headquarters: San Marcos, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. San Marcos High School Music Boosters

    EIN 330874556 · Headquarters: San Marcos, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. San Marcos High School Pto

    EIN 200258130 · Headquarters: San Marcos, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. San Marcos Historical Society Inc

    EIN 237373084 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  34. San Marcos Lions Club Foundation

    EIN 330829353 · Headquarters: San Marcos, CA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. San Marcos Mega Gameplex Inc

    EIN 812495804 · Headquarters: San Marcos, CA, US · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  36. San Marcos Memorial Post 3795 Veterans of Foreign Wars of the United States

    EIN 237282836 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. San Marcos Middle School Band Boosters Club

    EIN 481264072 · Headquarters: San Marcos, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  38. San Marcos Middle School Parent Club

    EIN 330698809 · Headquarters: San Marcos, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. San Marcos Pop Warner

    EIN 330561483 · Headquarters: San Marcos, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  40. San Marcos Prevention Coalition

    EIN 471395112 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. San Marcos Prof Firefighters Association Local 4184

    EIN 882165762 · Headquarters: San Marcos, CA, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. San Marcos Professional Firefighters Association

    EIN 300551495 · Headquarters: San Marcos, CA, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. San Marcos Rotary Club

    EIN 237051065 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. San Marcos Rotary Club Foundation

    EIN 330457941 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. San Marcos University Corporation

    EIN 330971982 · Headquarters: SAN MARCOS, CA, USA · Housing & Shelter · Latest available filing year: 2016 · Primary form: IRS Form 990

  46. San Marcos Youth Baseball

    EIN 953337487 · Headquarters: SAN MARCOS, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. San Marcos Youth Basketball

    EIN 330974821 · Headquarters: SAN MARCOS, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. San Marcos Youth Soccer

    EIN 275034132 · Headquarters: SAN MARCOS, CA, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Santa Fe Montessori Schools

    EIN 942833232 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2015 · Primary form: IRS Form 990

  50. Saving Shelter Pets of California Inc

    EIN 461004601 · Headquarters: SAN MARCOS, CA, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Sd Int Team USA

    EIN 200504653 · Headquarters: San Marcos, CA, US · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  52. Semper Porro Foundation

    EIN 831987886 · Headquarters: San Marcos, CA, US · Recreation & Sports · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  53. Shiloah Springs Bible Retreat Dba Indian Hills Camp

    EIN 952140751 · Headquarters: SAN MARCOS, CA, USA · Religion Related · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  54. Shooting Stars Special Needs Group Inc

    EIN 332759355 · Headquarters: SAN MARCOS, CA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  55. Sierra Madre Academy Inc Dba Saint Joseph Academy

    EIN 330643364 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Sigma Chi Alpha Fraternity

    EIN 330367307 · Headquarters: San Marcos, CA, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  57. Sigma Chi Fraternity Mu Beta Chapter Cal State U San Marcos

    EIN 474947496 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Sigma Theta Tau International

    EIN 900757109 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Signs of Silence

    EIN 330748035 · Headquarters: San Marcos, CA, US · Human Services · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  60. Sm Knights Lacrosse

    EIN 921178960 · Headquarters: San Marcos, CA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Socal Athletics Inc

    EIN 743081162 · Headquarters: SAN MARCOS, CA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  62. Socal Eed Inc

    EIN 461059690 · Headquarters: SAN MARCOS, CA, USA · Human Services · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  63. Soluna Sanctuary Inc

    EIN 920772402 · Headquarters: San Marcos, CA, US · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. South West Amateur Lacrosse Association

    EIN 811489696 · Headquarters: SAN MARCOS, CA, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  65. Southern California American Saddlebred Horse Association

    EIN 953823569 · Headquarters: SAN MARCOS, CA, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Southwest Robotics in Science Education

    EIN 461537195 · Headquarters: San Marcos, CA, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  67. Special Needs United Inc

    EIN 264430805 · Headquarters: San Marcos, CA, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  68. Spotlight on the Arts Foundation

    EIN 371511639 · Headquarters: San Marcos, CA, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  69. St Marks Mens Golf Club

    EIN 462485647 · Headquarters: San Marcos, CA, USA · Recreation & Sports · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  70. Steiner Wegman Medical Foundation Inc

    EIN 842276981 · Headquarters: SAN MARCOS, CA, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  71. Straight from the Heart Inc

    EIN 330883050 · Headquarters: SAN MARCOS, CA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  72. Summit Adventures International

    EIN 471853323 · Headquarters: San Marcos, CA, US · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  73. Sun Park Lake San Marcos Unit 1

    EIN 952321652 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  74. Sunslight Group Inc

    EIN 261932653 · Headquarters: San Marcos, CA, US · Environment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  75. Superatio Inc

    EIN 332566747 · Headquarters: San Marcos, CA, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Sweet Adelines International

    EIN 956133813 · Headquarters: SAN MARCOS, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Sydney Faith Pearson

    EIN 862884312 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  78. Tabernaculo Piedra De Corona

    EIN 332440701 · Headquarters: SAN MARCOS, CA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Taylion San Diego Academy

    EIN 463687213 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2017 · Primary form: IRS Form 990

  80. Team Redlands

    EIN 330328599 · Headquarters: San Marcos, CA, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Telangana Association of Greater San Diego Inc

    EIN 812836579 · Headquarters: SAN MARCOS, CA, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Templo Fuente De Agua Viva Inc

    EIN 990442259 · Headquarters: SAN MARCOS, CA, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. The Annie and Ronald F Bennett Family Foundation

    EIN 810777700 · Headquarters: San Marcos, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. The Answer

    EIN 372046529 · Headquarters: SAN MARCOS, CA, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. The Erickson Foundation

    EIN 464367549 · Headquarters: SAN MARCOS, CA, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  86. The Fischer-ritchey Foundation

    EIN 061673921 · Headquarters: SAN MARCOS, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  87. The Gpcr Institute

    EIN 471291331 · Headquarters: San Marcos, CA, USA · Medical Research · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. The Legacy Homeschool Alliance

    EIN 883635695 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. The Linnie Cooper Foundation

    EIN 953665261 · Headquarters: SAN MARCOS, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  90. The Mandorla Project

    EIN 611624465 · Headquarters: San Marcos, CA, US · Health Care · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  91. The Mental Foundation

    EIN 853155511 · Headquarters: San Marcos, CA, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. The New Jerusalem Foundation

    EIN 207370119 · Headquarters: SAN MARCOS, CA, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  93. The Pure Water Movement Inc

    EIN 462386790 · Headquarters: SAN MARCOS, CA, USA · International, Foreign Affairs & National Security · Latest available filing year: 2016 · Primary form: IRS Form 990

  94. The San Diego Regional Chapter of the Ntma

    EIN 010923419 · Headquarters: San Marcos, CA, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  95. The San Marcos Promise

    EIN 465460510 · Headquarters: SAN MARCOS, CA, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. The Uncles

    EIN 921692286 · Headquarters: San Marcos, CA, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. The Way Preschool

    EIN 871149599 · Headquarters: San Marcos, CA, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. The Williams Foundation

    EIN 203487695 · Headquarters: SAN MARCOS, CA, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  99. TNL Sports Inc

    EIN 680565164 · Headquarters: San Marcos, CA, USA · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990

  100. Toastmasters International

    EIN 260065440 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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