Unknown & Unclassified nonprofits in District of Columbia

Unknown & Unclassified nonprofits in District of Columbia. Browse 4,522 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. Alliance for Adult Education

    EIN 934697574 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Alliance for Aging Research

    EIN 541379174 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  3. Alliance for Climate Solutions Inc

    EIN 824873206 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  4. Alliance for Commercial Technology in Government

    EIN 853672350 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Alliance for Connected Care

    EIN 464263046 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Alliance for Continuing Education in the Health Professions Inc

    EIN 060999696 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Alliance for Economic Freedom

    EIN 413108261 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Alliance for Senior Health Care Financing Inc

    EIN 815462797 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  9. Alliance for Telecommunications Industry Solutions Inc

    EIN 133182027 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Alliance for the Future Inc

    EIN 931823365 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  11. Alliance for Women's Health and Prevention Inc

    EIN 881292471 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Alliance for Workers Against Repression Everywhere

    EIN 810703211 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990

  13. Alliance of Nonprofit Mailers Inc

    EIN 521349816 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. Alliance of Patriots for the Refoundation of Congo

    EIN 823607004 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  15. Alliance to Combat Extremism Fund

    EIN 843042240 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  16. Alliance to Protect Investment and Innovation

    EIN 871023183 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  17. Alliance to Protect Medical Innovation

    EIN 831354631 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  18. Alliance to Save America's 340B Program

    EIN 922685435 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Allies Building Community Inc a B C

    EIN 237261589 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Almas Immediate Benefit Association

    EIN 530024827 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Almas Shriners

    EIN 530027286 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Almas Temple Club

    EIN 530024830 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. Alpha Chi Omega Fraternity Inc

    EIN 546020342 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Alpha Chi Sigma Fraternity Collegiate Chapter

    EIN 546069351 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Alpha Omega Chapter of the Omega Psi Phi Fraternity Inc

    EIN 526055282 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  26. Alpha Phi Omega

    EIN 261263684 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Alpha Phi Omega

    EIN 526067031 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Alpha Phi Omega

    EIN 542055138 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. Alpha Sigma Phi Beta Chi Chapter Memorial Scholarship Fund

    EIN 521284528 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. Alpha-gal Alliance Action Fund

    EIN 991424980 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. Alt Washingtonia

    EIN 521771708 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Alternative to Violence Project Dc

    EIN 393611489 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Altman Fund

    EIN 237061964 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  34. Alu Can Alliance

    EIN 994536781 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  35. Alumnae Association of Barnard College

    EIN 237163995 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  36. Amateur Athletic Union of the United States Inc

    EIN 833930987 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  37. Amer Assn Jewish Lawyers Jurists-aajlj

    EIN 521321421 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. Amer Society of Plant Taxonomists Kathryn Picard Nmnh

    EIN 370952268 · Headquarters: WASHINTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. America Builds Association

    EIN 994141139 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. America Conservancy Action Inc

    EIN 812618092 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  41. America First Technology Infrastruc

    EIN 394258037 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. America First Works Inc

    EIN 815137380 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  43. America Leads Alliance

    EIN 412910880 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. America Working Together

    EIN 813512949 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  45. America Works USA

    EIN 452315353 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. America's Blood Centers

    EIN 866052376 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. America's Essential Hospitals

    EIN 521236600 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. America's Promise Action Fund

    EIN 850953078 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  49. America-Georgia Business Council

    EIN 541878031 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  50. American Academy of Actuaries

    EIN 366142798 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. American Academy of Child & Adolescent Psychiatry

    EIN 131958990 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. American Academy of Family Physicians

    EIN 526054439 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  53. American Accountability Foundation Action Inc

    EIN 934774398 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. American Action Voters Inc

    EIN 843877428 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. American Adoption Congress

    EIN 521150871 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. American Advertising Federation Inc

    EIN 132581875 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. American Air Museum in Britain

    EIN 521326048 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  58. American Alliance for Theatre and Education

    EIN 541376482 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. American Ambulance Association

    EIN 060924858 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. American Apparel & Footwear Association

    EIN 530258503 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. American Art Therapy Association Inc

    EIN 521993776 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  62. American Assn of Port Authorities Inc

    EIN 530193338 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. American Associates of Mozarteum Brasileiro

    EIN 521358592 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. American Association for Access Equity and Diversity

    EIN 310896714 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  65. American Association for Justice

    EIN 042114561 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. American Association for Justice Education Fund

    EIN 521105720 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. American Association for Museum Volunteers

    EIN 571179424 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. American Association for Physician Leadership Inc

    EIN 541032555 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. American Association of Colleges for Teacher Education

    EIN 526041929 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. American Association of Cosmetology Scho

    EIN 136163824 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. American Association of Credit Union Leagues

    EIN 756046595 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. American Association of Crop Insurers

    EIN 363223956 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. American Association of Exporters and Importers

    EIN 135266640 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. American Association of Naturopathic Physicians

    EIN 930936256 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. American Association of Pathologists' Assistants

    EIN 310921680 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. American Association of Public Insurance Adjusters

    EIN 271606890 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. American Association of Settlement Consultants

    EIN 862302202 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  78. American Association of Tissue Banks Inc

    EIN 521114697 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. American Bahraini Friendship Society

    EIN 541586044 · Headquarters: WASHINGTON DC, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. American Bakers Association

    EIN 360723070 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. American Bankers Association

    EIN 521001304 · Headquarters: Washington, DC, United States · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. American Battlefield Trust

    EIN 541426643 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. American Benefits Council

    EIN 066100040 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. American Beverage Association

    EIN 530025510 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. American Biomass Energy Association

    EIN 770508798 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. American Board Forensic Anthropology

    EIN 521105233 · Headquarters: WASHIGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  87. American Board of Cardiovascular Medicine

    EIN 992608723 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  88. American Board of Clinical Chemistry

    EIN 526056352 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. American Board of Examiners in Psychodrama Sociometry and Group Psych

    EIN 521069317 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. American Board of Neurological Surgery

    EIN 566067043 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. American Board of Pediatric Neurological Surgery Inc

    EIN 311331702 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  92. American Board of Wound Management

    EIN 650584679 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. American Bus Association

    EIN 530114680 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. American Business Womens Association Dc Charter Chapter

    EIN 546074991 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. American Catholics for Freedom Inc

    EIN 455233112 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  96. American Center

    EIN 474245571 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. American Chemical Society

    EIN 237000013 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. American Chemical Society

    EIN 521601507 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. American Chemical Society

    EIN 526054070 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  100. American Chemical Society

    EIN 526059804 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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