Unknown & Unclassified nonprofits in California

Unknown & Unclassified nonprofits in California. Browse 48,218 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. SHS Girls Volleyball Boosters Inc

    EIN 825296451 · Headquarters: Santa Clarita, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  2. Shu No Sonae Kyokai Provision of God

    EIN 611743477 · Headquarters: TORRANCE, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  3. Shut Up and Ride M C Inc

    EIN 260523715 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  4. Shuva Israel Institution

    EIN 995010586 · Headquarters: Tarzana, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. Si&a Community Partnership

    EIN 274480343 · Headquarters: El Dorado Hills, CA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  6. Siaa Inc

    EIN 473977442 · Headquarters: Palo Alto, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  7. Sibling Cities USA

    EIN 873322941 · Headquarters: Palo Alto, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Sid Barry Foundation Inc

    EIN 116035222 · Headquarters: SAN JUAN BAUTISTA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  9. Siddhartha Foundation Inc

    EIN 202163940 · Headquarters: SANTA BARBARA, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  10. Sidelines National Support Network

    EIN 330502682 · Headquarters: Laguna Beach, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  11. Sierra Access Coalition

    EIN 261191802 · Headquarters: SACRAMENTO, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Sierra Amateur Radio Club

    EIN 953377283 · Headquarters: Ridgecrest, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  13. Sierra Arthritis Foundation

    EIN 770194553 · Headquarters: IRVINE, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  14. Sierra Artists Cooperative

    EIN 275023678 · Headquarters: MARIPOSA, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Sierra Bella Mutual Water Company

    EIN 952380391 · Headquarters: WOFFORD HEIGHTS, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  16. Sierra Business Park Association

    EIN 472235618 · Headquarters: ROCKLIN, CA, USA · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  17. Sierra Cascade Family Opportunities

    EIN 680178607 · Headquarters: Quincy, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Sierra Central Credit Union

    EIN 941484851 · Headquarters: Yuba City, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Sierra Chaplaincy

    EIN 930786513 · Headquarters: PLACERVILLE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Sierra Chapter American Theatre Organ Society

    EIN 237018083 · Headquarters: Fair Oaks, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Sierra Child and Family Services Inc

    EIN 680166134 · Headquarters: DIAMOND SPRINGS, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Sierra City Fire Dept Auxiliary

    EIN 941700489 · Headquarters: Sierra City, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sierra Club

    EIN 941153307 · Headquarters: OAKLAND, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  24. Sierra Club California Statewide Ballot Measures Committee

    EIN 471386385 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  25. Sierra College Faculty Association

    EIN 680008035 · Headquarters: ROCKLIN, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Sierra Dachshund Breeders Club Of

    EIN 832639576 · Headquarters: CABAZON, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Sierra Environmental Social Service

    EIN 262458058 · Headquarters: Hayward, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Sierra Estate Property Owners Association

    EIN 237151782 · Headquarters: Weimar, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Sierra Express Bicycle Club of Nevada County

    EIN 884321082 · Headquarters: Grass Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  30. Sierra Family Medical Clinic Inc

    EIN 680320801 · Headquarters: Nevada City, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Sierra Flight No 27 Order of Daedalians

    EIN 680049072 · Headquarters: Lincoln, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  32. Sierra Foothills Amateur Radio Club

    EIN 680038930 · Headquarters: Auburn, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Sierra Foothills Audubon Society

    EIN 942770544 · Headquarters: GRASS VALLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Sierra Foothills Community Club

    EIN 942402262 · Headquarters: Squaw Valley, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Sierra Foothills Cycling Club

    EIN 271215785 · Headquarters: Auburn, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Sierra Foothills R-c Flyers Inc

    EIN 680202025 · Headquarters: AUBURN, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Sierra Ghost Riders Horse Club

    EIN 300489835 · Headquarters: Lincoln, CA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  38. Sierra Grande Estates Mutual Water

    EIN 953221856 · Headquarters: BISHOP, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Sierra Health Foundation Community Development Corporation

    EIN 850896763 · Headquarters: SACRAMENTO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  40. Sierra High School Athletic Boosters Club

    EIN 680363413 · Headquarters: Manteca, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  41. Sierra Highlands Vintner Group

    EIN 612217758 · Headquarters: PLACERVILLE, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Sierra Hills Swim & Racquet Cl

    EIN 952829236 · Headquarters: CANYON COUNTRY, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. Sierra Historic Sites Association

    EIN 237037395 · Headquarters: Oakhurst, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. Sierra Linda Neighborhood Council Watch

    EIN 770357854 · Headquarters: Oxnard, CA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  45. Sierra Madre Elementary Pta

    EIN 956207399 · Headquarters: SIERRA MADRE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  46. Sierra Madre Fire Safe Council Inc

    EIN 205458739 · Headquarters: SIERRA MADRE, CA, USA · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  47. Sierra Madre Garden Club

    EIN 680025524 · Headquarters: Plymouth, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  48. Sierra Madre Historical Preservation Society

    EIN 956248485 · Headquarters: SIERRA MADRE, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Sierra Madre Little League

    EIN 954511681 · Headquarters: SIERRA MADRE, CA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  50. Sierra Madre Mountain Conservancy

    EIN 954266904 · Headquarters: Sierra Madre, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Sierra Madre Neighbors for Fairness

    EIN 881911149 · Headquarters: San Rafael, CA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  52. Sierra Madre Pioneer Cemetery Association

    EIN 956141275 · Headquarters: SIERRA MADRE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Sierra Madre Professional Firefighters Association

    EIN 834526754 · Headquarters: SIERRA MADRE, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Sierra Madre Radio Controlled Modelers

    EIN 954050680 · Headquarters: Duarte, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Sierra Marlins Swim Team

    EIN 680032838 · Headquarters: FOLSOM, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. Sierra Masonic Center Association

    EIN 510676791 · Headquarters: Oakhurst, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Sierra Masonic Family Club

    EIN 770007267 · Headquarters: MORRO BAY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. Sierra Meadowlarks Inc

    EIN 260339931 · Headquarters: Oakhurst, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  59. Sierra Mental Wellness Group

    EIN 237249387 · Headquarters: ROSEVILLE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Sierra Mountain Youth Football

    EIN 823752834 · Headquarters: Placerville CA, CA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  61. Sierra Nevada Golf Course Superintendents Association

    EIN 680181455 · Headquarters: CLOVIS, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  62. Sierra Oaks Soccer Club

    EIN 680049030 · Headquarters: Sacramento, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Sierra Old Timers Motorcycle Club

    EIN 942662548 · Headquarters: Rocklin, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  64. Sierra Pacific Educational Adventures

    EIN 680317864 · Headquarters: Vacaville, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Sierra Pacific Flyfishers Incorporated

    EIN 953622493 · Headquarters: Van Nuys, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Sierra Pacific Foundation

    EIN 942574178 · Headquarters: REDDING, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  67. Sierra Paint Horse Club Inc

    EIN 680015109 · Headquarters: Wilton, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Sierra Pines Road Improvement Group

    EIN 237315611 · Headquarters: Pioneer, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  69. Sierra Preschool

    EIN 941560198 · Headquarters: Auburn, CA, USA · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  70. Sierra Road Improvement Association

    EIN 946104511 · Headquarters: SAN JOSE, CA, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  71. Sierra Salem Christian Homes

    EIN 770258318 · Headquarters: Modesto, CA, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Sierra School Parents Club

    EIN 680197905 · Headquarters: PLACERVILLE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. Sierra Service Center Council

    EIN 900215981 · Headquarters: Bakersfield, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Sierra Services for the Blind

    EIN 942760029 · Headquarters: NEVADA CITY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Sierra Sky Park Property Owners Assn Inc

    EIN 237124641 · Headquarters: FRESNO, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Sierra Sportsmens Club and Junior Division Inc

    EIN 202657577 · Headquarters: Susanville, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Sierra Squares Square Dance Club

    EIN 943058042 · Headquarters: Shingle Springs, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Sierra Sunrise Ranch Road Committee

    EIN 770398742 · Headquarters: Exeter, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Sierra Trail Dogs LLC

    EIN 262460158 · Headquarters: Rocklin, CA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990

  80. Sierra Tribal Consortium Inc

    EIN 942494904 · Headquarters: FRESNO, CA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  81. Sierra Valley Water Company

    EIN 941409913 · Headquarters: Beckwourth, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Sierra View Christian Educational Endowment Inc

    EIN 770235467 · Headquarters: EXETER, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  83. Sierra View Homes

    EIN 946088811 · Headquarters: REEDLEY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Sierra Village Inc

    EIN 770322895 · Headquarters: VISALIA, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Sierra Village Mutual Water Co

    EIN 946104169 · Headquarters: TWAIN HARTE, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  86. Sierra Vista Center Inc

    EIN 680087395 · Headquarters: COLFAX, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Sierra Vista Elementary Pta

    EIN 901217699 · Headquarters: LA HABRA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. Sierra Vista Elementary Ptc

    EIN 770424531 · Headquarters: Clovis, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Sierra Vista Middle School Ptsa - a California Congress of Pta

    EIN 330102833 · Headquarters: IRVINE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  90. Sierra West Bernese Mtn Dog Club

    EIN 680175812 · Headquarters: Mountain View, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Sierra Womens Service Club

    EIN 770432990 · Headquarters: Prather, CA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  92. Sierra-cascade Logging Conference

    EIN 941557130 · Headquarters: REDDING, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Sierraville Community Church

    EIN 942343306 · Headquarters: SIERRAVILLE, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Sigma Alpha Chapter of Omega Nu

    EIN 237348116 · Headquarters: SANTA CRUZ, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. Sigma Alpha Epsilon - California Delta Chapter

    EIN 951222410 · Headquarters: Los Angeles, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Sigma Alpha Epsilon - California Gamma Chapter

    EIN 951782264 · Headquarters: Los Angeles, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Sigma Alpha Epsilon Fraternity

    EIN 237134114 · Headquarters: San Francisco, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  98. Sigma Alpha Epsilon Fraternity

    EIN 812426505 · Headquarters: Pomona, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  99. Sigma Alpha Epsilon Fraternity

    EIN 815314109 · Headquarters: Escondido, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Sigma Alpha Epsilon Fraternity

    EIN 922921422 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

First page and all pages