Unknown & Unclassified nonprofits

Unknown & Unclassified nonprofits. Browse 557,756 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. San Leandro Historical Railway Soc

    EIN 943033633 · Headquarters: San Leandro, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. San Leandro Hospital Auxiliary

    EIN 237194215 · Headquarters: SAN LEANDRO, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  3. San Leandro Lions Club

    EIN 392638743 · Headquarters: San Leandro, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. San Leandro Masonic Building Association

    EIN 941040191 · Headquarters: San Leandro, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. San Leandro Old Timer Baseball Corporation

    EIN 933711879 · Headquarters: CastroValley, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  6. San Leandro Police Officers Association

    EIN 946088803 · Headquarters: San Leandro, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. San Leandro Public Library Foundation

    EIN 943180326 · Headquarters: San Leandro, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. San Leandro Rotary Endowment

    EIN 942920720 · Headquarters: San Leandro, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. San Leandro Sailing Club Inc

    EIN 941744317 · Headquarters: SAN LEANDRO, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  10. San Leandro Scholarship Foundation

    EIN 941663376 · Headquarters: San Leandro, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. San Leandro Teachers Association

    EIN 942587410 · Headquarters: SAN LEANDRO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. San Leandro Youth Soccer League

    EIN 923825933 · Headquarters: San Leandro, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  13. San Lorenzo Columbian Association

    EIN 942796771 · Headquarters: San Lorenzo, CA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  14. San Lorenzo Dog Training Club Inc

    EIN 943139777 · Headquarters: San Leandro, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  15. San Lorenzo Education Association

    EIN 942396008 · Headquarters: SAN LEANDRO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. San Lorenzo Foundation

    EIN 770080695 · Headquarters: SANTA YNEZ, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. San Lorenzo Gambereli Mutual Ben Soc

    EIN 250774305 · Headquarters: pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  18. San Lorenzo Ruiz Association of America

    EIN 222487993 · Headquarters: JAMAICA, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  19. San Lorenzo Ruiz De Manila Texas

    EIN 760263939 · Headquarters: Sugar Land, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  20. San Lorenzo Valley Girls Softball

    EIN 770369496 · Headquarters: Ben Lomond, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. San Lorenzo Valley Youth Council

    EIN 237379961 · Headquarters: BEN LOMOND, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  22. San Lorenzo Village Homes Association

    EIN 941026373 · Headquarters: San Lorenzo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. San Luis Distance Club

    EIN 237386903 · Headquarters: San luis Obispo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. San Luis Obispo Alpha Inc

    EIN 953570504 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. San Luis Obispo Archaeological Society

    EIN 237433905 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  26. San Luis Obispo Blues Society

    EIN 770243462 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. San Luis Obispo Cal Ripken Baseball

    EIN 237087786 · Headquarters: San Luis Obispo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  28. San Luis Obispo Canterbury Foundation

    EIN 263235600 · Headquarters: San Luis Obispo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. San Luis Obispo Chapter 170 of the Experimental Aircraft Assn Inc

    EIN 953162296 · Headquarters: San Luis Obispo, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  30. San Luis Obispo Child Development Center Child Development Resource Center

    EIN 237111804 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. San Luis Obispo Christadelphian Ecclesia

    EIN 770145785 · Headquarters: Arroyo Grande, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. San Luis Obispo City Employees Association

    EIN 953508949 · Headquarters: San Luis Obispo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. San Luis Obispo Coast Wine Collective

    EIN 770251086 · Headquarters: PISMO BEACH, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. San Luis Obispo Committee for Education on Alcoholism (AKA Middle House)

    EIN 956136040 · Headquarters: San Luis Obispo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  35. San Luis Obispo County Arts Council Dba Arts Obispo

    EIN 953738562 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. San Luis Obispo County Band

    EIN 952816351 · Headquarters: Arroyo Grande, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. San Luis Obispo County Bar Association

    EIN 770228620 · Headquarters: San Luis Obispo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. San Luis Obispo County Builders Exchange

    EIN 951861340 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. San Luis Obispo County Deputy Sheriffs Association

    EIN 953112965 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. San Luis Obispo County Emergency Communications Council

    EIN 770327501 · Headquarters: Atascadero, CA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  41. San Luis Obispo County Employees' Association

    EIN 952150962 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. San Luis Obispo County Farm Bureau

    EIN 951659761 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. San Luis Obispo County Sheriff Advisory

    EIN 770189925 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. San Luis Obispo County Visitors and Conference Bureau

    EIN 770221126 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. San Luis Obispo Crime Stoppers Program Inc

    EIN 953826834 · Headquarters: San Luis Obispo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. San Luis Obispo Duplicate Bridge Club

    EIN 770406139 · Headquarters: San Luis Obispo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. San Luis Obispo Friends of the Library

    EIN 953498214 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. San Luis Obispo International Film Festival Inc

    EIN 770367414 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. San Luis Obispo Kennel Club Inc

    EIN 952500092 · Headquarters: Atascadero, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. San Luis Obispo Local Chapter of Democratic Socialists of America

    EIN 880861751 · Headquarters: Los Osos, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. San Luis Obispo Meals on Wheels Inc

    EIN 952874315 · Headquarters: SAN LUIS OBISPO, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  52. San Luis Obispo Medical Education and Research Foundation Inc

    EIN 956061632 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  53. San Luis Obispo Mothers for Peace

    EIN 953080124 · Headquarters: San Luis Obispo, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. San Luis Obispo Non-profit Housing

    EIN 931038371 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. San Luis Obispo Quarterhorse Assoc

    EIN 770185565 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. San Luis Obispo Railroad Museum

    EIN 770277323 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. San Luis Obispo Rotary Club Inc Rotary International San Luis Obispo

    EIN 951187265 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  58. San Luis Obispo Soaring Association

    EIN 452798123 · Headquarters: Los Osos, CA, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  59. San Luis Obispo Unit 540 Acbl

    EIN 770132248 · Headquarters: San Luis Obispo, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. San Luis Obispo Wesley Community

    EIN 770025674 · Headquarters: San Luis Obispo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. San Luis Soccer Association

    EIN 050628023 · Headquarters: SAN LUIS, AZ, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. San Luis Softball Club

    EIN 270930173 · Headquarters: Somerton, AZ, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  63. San Luis Valley Area Health Education Center Inc

    EIN 840775551 · Headquarters: Alamosa, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. San Luis Valley Canal Company

    EIN 840465368 · Headquarters: Monte Vista, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. San Luis Valley Chapter Trout Unlimited

    EIN 742047348 · Headquarters: ALAMOSA, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. San Luis Valley Development Resources Group

    EIN 840896112 · Headquarters: ALAMOSA, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. San Luis Valley Diabetes

    EIN 742388234 · Headquarters: MONTE VISTA, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. San Luis Valley Great Outdoors

    EIN 822360438 · Headquarters: ALAMOSA, CO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  69. San Luis Valley Habitat for Humanity

    EIN 841278246 · Headquarters: Alamosa, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. San Luis Valley Masonic Association Inc

    EIN 840466110 · Headquarters: SOUTH FORK, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. San Luis Valley Potato Shippers Association

    EIN 846037024 · Headquarters: Monte Vista, CO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  72. San Luis Valley Regional Science Fair Inc

    EIN 742247257 · Headquarters: Alamosa, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. San Luis Valley Rural Electric Cooperative Inc

    EIN 840312795 · Headquarters: Monte Vista, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. San Luis Valley Ski-hi Stampede Inc

    EIN 840565546 · Headquarters: MONTE VISTA, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. San Luis Valley Television Inc

    EIN 840733826 · Headquarters: LA JARA, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. San Luis Village Subdivision

    EIN 431117697 · Headquarters: Fenton, MO, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  77. San Luis Yacht Club

    EIN 953853372 · Headquarters: AVILA BEACH, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  78. San Manuel Library

    EIN 860281109 · Headquarters: San Manuel, AZ, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  79. San Mar Children's Home Inc

    EIN 520625106 · Headquarters: BOONSBORO, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. San Marco Club Inc

    EIN 596014899 · Headquarters: Jacksonville, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  81. San Marco Preservation Society Inc

    EIN 591674207 · Headquarters: Jacksonville, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  82. San Marco Social Committee 2023

    EIN 922827029 · Headquarters: Boynton Beach, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. San Marcos Area Chamber of Commerce

    EIN 740880672 · Headquarters: SAN MARCOS, TX, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  84. San Marcos Area Youth Soccer

    EIN 900114195 · Headquarters: SAN MARCOS, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. San Marcos Boosters Club

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

  86. San Marcos Chamber of Commerce

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

  87. San Marcos Civic Foundation

    EIN 746109230 · Headquarters: AUSTIN, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  88. San Marcos Community Foundation

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

  89. San Marcos Educators Assn Ctanea

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

  90. San Marcos Girls Softball League

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

  91. San Marcos Hays County Emergency Medical Services Incorporated

    EIN 742276859 · Headquarters: San Marcos, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. San Marcos High School Royal Band Boosters

    EIN 770086774 · Headquarters: Santa Barbara, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. 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

  94. San Marcos Industrial Foundation

    EIN 900050273 · Headquarters: SAN MARCOS, TX, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  95. San Marcos Lions International

    EIN 746052282 · Headquarters: SAN MARCOS, TX, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  96. 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

  97. San Marcos Nursing & Rehab Center Inc

    EIN 205782224 · Headquarters: Altamonte Springs, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. San Marcos Parent-child Workshop

    EIN 770138239 · Headquarters: SANTA BARBARA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. San Marcos Performing Arts Assn Inc

    EIN 742466389 · Headquarters: SAN MARCOS, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  100. San Marcos Philharmonia

    EIN 853766958 · Headquarters: Kyle, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

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