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. American Nephrology Nurses Association

    EIN 800606956 · Headquarters: Wentzville, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. American Nephrology Nurses Association

    EIN 800633256 · Headquarters: Neenah, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. American Nephrology Nurses Association

    EIN 800658884 · Headquarters: N Salt Lake, UT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Nephrology Nurses Association

    EIN 810500827 · Headquarters: Helena, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. American Nephrology Nurses Association

    EIN 832473090 · Headquarters: Waipahu, HI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  6. American Nephrology Nurses Association Arkansas #215

    EIN 364673793 · Headquarters: WHITE HALL, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. American Nephrology Nurses Association Black Swamp #323

    EIN 371605357 · Headquarters: SYLVANIA, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. American Nephrology Nurses Association Red River #273

    EIN 364673517 · Headquarters: OKLAHOMA CITY, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. American Nephrology Nurses Association Sawtooth #521

    EIN 611618114 · Headquarters: MERIDIAN, ID, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. American Nest

    EIN 933635453 · Headquarters: Centerline, MI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  11. American Netherland Dwarf Rabbit Club

    EIN 310926156 · Headquarters: Mukwonago, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. American Network of Community Options and Resources

    EIN 520846389 · Headquarters: ALEXANDRIA, VA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  13. American Neurogastroenterology and Motility Society

    EIN 421222917 · Headquarters: BELLEVILLE, MI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. American Nickeloid Employees Dba Anco Community Credit Union

    EIN 362351886 · Headquarters: LASALLE, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  15. American Nomad Association

    EIN 394101844 · Headquarters: SPRING, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. American Nonsmokers Rights Foundation

    EIN 942922136 · Headquarters: Berkeley, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. American Norwich Society

    EIN 454737560 · Headquarters: Dayton, TX, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  18. American Now

    EIN 820623856 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  19. American Nuclear Society Delaware Valley Section

    EIN 263875335 · Headquarters: West Chester, PA, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  20. American Nuclear Society Wilmington Chapter

    EIN 263119696 · Headquarters: Wilmington, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. American Nudist Research Library Inc

    EIN 591939933 · Headquarters: KISSIMMEE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. American Numismatic Association

    EIN 486063403 · Headquarters: COLORADO SPRINGS, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. American Nurses Association Inc

    EIN 131893923 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. American Nurses Credentialing Center

    EIN 431565726 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. American Nursing Informatics Association Colorado Chapter

    EIN 814347178 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  26. American Nutrition Association Inc

    EIN 060971131 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  27. American Nutrition Association Inc

    EIN 823186127 · Headquarters: Hinsdale, IL, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  28. American Oath Initiative

    EIN 870984149 · Headquarters: Hampstead, NC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  29. American Occupational Therapy Association

    EIN 131526422 · Headquarters: BETHESDA, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. American Opal Society

    EIN 237274651 · Headquarters: Garden Grove, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. American Open University

    EIN 541756821 · Headquarters: Alexandria, VA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  32. American Opera Society of Chicago

    EIN 366057235 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. American Ophthalmological Society

    EIN 411235482 · Headquarters: SAN FRANCISCO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. American Opportunity

    EIN 922534024 · Headquarters: WASHINGTON, DC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. American Opportunity Action

    EIN 332238677 · Headquarters: WASHINGTON, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. American Opportunity and Security Inc

    EIN 521096057 · Headquarters: Alexandria, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. American Opportunity Foundation

    EIN 455551346 · Headquarters: Huntington Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. American Opportunity Foundation

    EIN 582381397 · Headquarters: Atlanta, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. American Optical Foundation

    EIN 046028058 · Headquarters: SOUTHBRIDGE, MA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  40. American Optometric Association

    EIN 430684708 · Headquarters: St. Louis, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. American Optometric Student Association

    EIN 237309941 · Headquarters: St Louis, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. American Optometric Student Association Incorporated

    EIN 237251341 · Headquarters: COLUMBUS, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. American Optometric Student Association Incorporated

    EIN 237354836 · Headquarters: CHICAGO, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. American Optometric Student Association Incorporated

    EIN 431322568 · Headquarters: ST LOUIS, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. American Optometric Student Association Incorporated

    EIN 510186473 · Headquarters: FOREST GROVE, OR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. American Optometric Student Association Incorporated

    EIN 510186477 · Headquarters: BIRMINGHAM, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. American Optometric Student Association Incorporated

    EIN 510195068 · Headquarters: Fullerton, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  48. American Optometric Student Association Incorporated

    EIN 510195072 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  49. American Optometric Student Association Incorporated

    EIN 943096621 · Headquarters: Berkeley, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  50. American Orff Schulwerk Association

    EIN 431351202 · Headquarters: Overland Park, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. American Orff Schulwerk Association Mt Lassen Chapter

    EIN 680243768 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  52. American Orff-schulwerk Association

    EIN 133325472 · Headquarters: Jackson Heights, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. American Orff-schulwerk Association

    EIN 161492748 · Headquarters: Corning, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. American Orff-schulwerk Association

    EIN 222570344 · Headquarters: Little Valley, NY, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  55. American Orff-schulwerk Association

    EIN 222638470 · Headquarters: Boonton, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. American Orff-schulwerk Association

    EIN 232322681 · Headquarters: Coatesville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. American Orff-schulwerk Association

    EIN 237370951 · Headquarters: Milford, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. American Orff-schulwerk Association

    EIN 251485631 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. American Orff-schulwerk Association

    EIN 300422322 · Headquarters: Baton Rouge, LA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. American Orff-schulwerk Association

    EIN 311122255 · Headquarters: Fairfield, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. American Orff-schulwerk Association

    EIN 311348647 · Headquarters: Avon, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. American Orff-schulwerk Association

    EIN 311348652 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. American Orff-schulwerk Association

    EIN 311348653 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. American Orff-schulwerk Association

    EIN 320242734 · Headquarters: Weston, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. American Orff-schulwerk Association

    EIN 341447290 · Headquarters: Northfield, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. American Orff-schulwerk Association

    EIN 341561911 · Headquarters: Bowling Green, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. American Orff-schulwerk Association

    EIN 351433226 · Headquarters: Avon, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. American Orff-schulwerk Association

    EIN 363248818 · Headquarters: Harvard, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. American Orff-schulwerk Association

    EIN 382212276 · Headquarters: Grosse Pointe Farms, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. American Orff-schulwerk Association

    EIN 382574667 · Headquarters: Hudsonville, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. American Orff-schulwerk Association

    EIN 383252585 · Headquarters: Middleville, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. American Orff-schulwerk Association

    EIN 391591141 · Headquarters: Sun Prairie, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. American Orff-schulwerk Association

    EIN 450378644 · Headquarters: Bismarck, ND, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. American Orff-schulwerk Association

    EIN 461603582 · Headquarters: Durango, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. American Orff-schulwerk Association

    EIN 462801462 · Headquarters: Austin, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. American Orff-schulwerk Association

    EIN 470741120 · Headquarters: Bennington, NE, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. American Orff-schulwerk Association

    EIN 521413390 · Headquarters: Manassas, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. American Orff-schulwerk Association

    EIN 581776624 · Headquarters: Stone Mountain, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. American Orff-schulwerk Association

    EIN 592540062 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. American Orff-schulwerk Association

    EIN 592807366 · Headquarters: Miami, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. American Orff-schulwerk Association

    EIN 592856421 · Headquarters: Orlando, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. American Orff-schulwerk Association

    EIN 592865804 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. American Orff-schulwerk Association

    EIN 611134208 · Headquarters: Wimore, KY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. American Orff-schulwerk Association

    EIN 611816198 · Headquarters: BROKEN ARROW, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. American Orff-schulwerk Association

    EIN 631054256 · Headquarters: Hoover, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. American Orff-schulwerk Association

    EIN 650023783 · Headquarters: Cape Coral, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. American Orff-schulwerk Association

    EIN 742375163 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. American Orff-schulwerk Association

    EIN 752240144 · Headquarters: Providence Village, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. American Orff-schulwerk Association

    EIN 800301050 · Headquarters: Spokane Valley, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. American Orff-schulwerk Association

    EIN 810490003 · Headquarters: Corvallis, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. American Orff-schulwerk Association

    EIN 820458217 · Headquarters: Lowman, ID, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. American Orff-schulwerk Association

    EIN 830274864 · Headquarters: Cheyenne, WY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. American Orff-schulwerk Association

    EIN 843499724 · Headquarters: Murray, KY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. American Orff-schulwerk Association

    EIN 850353030 · Headquarters: Corrales, NM, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. American Orff-schulwerk Association

    EIN 870570959 · Headquarters: Salt Lake City, UT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. American Orff-schulwerk Association

    EIN 880175007 · Headquarters: Henderson, NV, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. American Orff-schulwerk Association

    EIN 911294477 · Headquarters: Puyallup, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. American Orff-schulwerk Association

    EIN 920118326 · Headquarters: Anchorage, AK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. American Orff-schulwerk Association

    EIN 942362774 · Headquarters: SAN MATEO, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. American Orff-schulwerk Association

    EIN 953889601 · Headquarters: Lawndale, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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