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. South County History Center

    EIN 056011751 · Headquarters: Kingston, RI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. South County Little League Inc

    EIN 541392238 · Headquarters: LORTON, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. South County Little League Inc

    EIN 825034580 · Headquarters: BOONSBORO, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  4. South County Memorial Gardens Inc

    EIN 436633596 · Headquarters: Saint Louis, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  5. South County Moose Lodge #2279

    EIN 521432785 · Headquarters: SHADY SIDE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. South County Outreach

    EIN 330330233 · Headquarters: IRVINE, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. South County Peoples Kitchen

    EIN 770305498 · Headquarters: ARROYO GRANDE, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  8. South County Seniors Inc

    EIN 770252816 · Headquarters: Grover Beach, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. South County Teachers United

    EIN 953140375 · Headquarters: CHULA VISTA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. South County Tourism Council Inc

    EIN 050424505 · Headquarters: CHARLESTOWN, RI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. South County Umpires Association

    EIN 943166851 · Headquarters: Oakland, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. South County Youth Association Incorporated

    EIN 521225368 · Headquarters: SHADY SIDE, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. South Cove Community Health Center Inc

    EIN 042501818 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. South Creek Ambulance Assn Inc

    EIN 251329787 · Headquarters: Gillett, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  15. South Creek Community Organization

    EIN 933457204 · Headquarters: Coconut Creek, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. South Creek Equestrian Club Inc

    EIN 593316237 · Headquarters: NEW PORT RICHEY, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. South Cumberland Regional Land Trust Inc

    EIN 621514504 · Headquarters: Sewanee, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. South Custer County Historical Society Inc

    EIN 820379546 · Headquarters: Mackay, ID, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. South Cuyahoga Sportsmen Association

    EIN 346664854 · Headquarters: MEDINA, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  20. South Dade Chamber of Commerce Inc

    EIN 590652495 · Headquarters: Homestead, FL, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  21. South Dakota Academy of Nutrition and Dietetics

    EIN 460310418 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. South Dakota Academy of Ophthalmology

    EIN 460332368 · Headquarters: SIOUX FALLS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. South Dakota Academy of Physician Assistants

    EIN 460379893 · Headquarters: Vermillion, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  24. South Dakota Academy of Science

    EIN 460272052 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. South Dakota Access for Every Woman

    EIN 451476531 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. South Dakota Advocacy Network for Women

    EIN 920346455 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. South Dakota Ag Alliance

    EIN 934245619 · Headquarters: Pierre, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. South Dakota Agri-business Association

    EIN 460274736 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. South Dakota Alpha Chapter of Sigma Phi Epsilon

    EIN 460436062 · Headquarters: BROOKINGS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. South Dakota Amateur Baseball Association

    EIN 460232266 · Headquarters: PARKSTON, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  31. South Dakota Amateur Baseball Hall of Fame

    EIN 460338065 · Headquarters: LAKE NORDEN, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. South Dakota Amateur Billards

    EIN 271388566 · Headquarters: Rapid City, SD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  33. South Dakota Animal Control Association

    EIN 450427923 · Headquarters: Huron, SD, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  34. South Dakota Assn of Plumbing - Heating - Cooling Contractors Inc

    EIN 460253627 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. South Dakota Association for Lifelong Learning

    EIN 460387384 · Headquarters: Huron, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. South Dakota Association for Marriage and Family Therapy

    EIN 061803779 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  37. South Dakota Association of Assessing

    EIN 460354954 · Headquarters: Sturgis, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  38. South Dakota Association of College

    EIN 460439943 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  39. South Dakota Association of Conservation District Employees

    EIN 460344384 · Headquarters: Webster, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. South Dakota Association of Cooperatives

    EIN 460214081 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. South Dakota Association of County Commissioners

    EIN 460277101 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  42. South Dakota Association of County Highway Superintendents

    EIN 460417237 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  43. South Dakota Association of Credit Specialists

    EIN 460445868 · Headquarters: Huron, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  44. South Dakota Association of Enviromental Professionals

    EIN 460423048 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  45. South Dakota Association of Nurse Anesthetists

    EIN 466036687 · Headquarters: SPEARFISH, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. South Dakota Association of Rural Water Systems

    EIN 460340547 · Headquarters: MADISON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. South Dakota Association of Towns and Townships

    EIN 460407937 · Headquarters: HURON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. South Dakota Association of Video Lottery Establishment

    EIN 810561488 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  49. South Dakota Association Pharmacy Technicians

    EIN 870808847 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  50. South Dakota Automobile Dealers Association

    EIN 460221929 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. South Dakota Automobile Insurance Plan

    EIN 416036864 · Headquarters: JOHNSTON, RI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. South Dakota Aviation Association

    EIN 460403035 · Headquarters: HAYES, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  53. South Dakota Aviation Hall of Fame Inc

    EIN 363868338 · Headquarters: SPEARFISH, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  54. South Dakota Bankers Association

    EIN 460191650 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. South Dakota Bankers Foundation

    EIN 460372887 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. South Dakota Baptist Convention

    EIN 460224543 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. South Dakota Bass State Federation Inc

    EIN 460361793 · Headquarters: Canistota, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. South Dakota Beef Industry Council Inc

    EIN 460342595 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. South Dakota Beekeepers Association

    EIN 460360126 · Headquarters: Bruce, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. South Dakota Black Chamber of Commerce

    EIN 933682013 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. South Dakota Black Hills Badlands and Lakes Association Inc

    EIN 460111395 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. South Dakota Bottlers Association Inc

    EIN 363577944 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. South Dakota Bpa

    EIN 460279595 · Headquarters: MITCHELL, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. South Dakota Broadcasters Association

    EIN 460305622 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. South Dakota Campground Owners Association

    EIN 460365491 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  66. South Dakota Canvassing Group

    EIN 923635741 · Headquarters: Hartford, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. South Dakota Cattle Women Inc

    EIN 460340618 · Headquarters: GANN VALLEY, SD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  68. South Dakota Cattlemens Association

    EIN 460365649 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. South Dakota Chamber of Commerce & Industry

    EIN 460141180 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. South Dakota Chapter American College of Surgeons

    EIN 460378903 · Headquarters: SIOUX FALLS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. South Dakota Chapter of Aga

    EIN 270228206 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. South Dakota Chapter of American Physica L Therapy Association

    EIN 460335118 · Headquarters: Sioux Falls, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. South Dakota Chapter of American Society of Tax Professionals

    EIN 460396860 · Headquarters: Watertown, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. South Dakota Chiropractors

    EIN 466015748 · Headquarters: MITCHELL, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. South Dakota Chiropractors Foundation

    EIN 460402888 · Headquarters: Huron, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. South Dakota Coalition Ending Domestic and Sexual Violence

    EIN 460357192 · Headquarters: RAPID CITY, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. South Dakota Collectors Association

    EIN 460284379 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. South Dakota Congress of Parents

    EIN 460390845 · Headquarters: RAPID CITY, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. South Dakota Congress of Parents and Teachers

    EIN 264504842 · Headquarters: BRANDON, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  80. South Dakota Congress of Parents and Teachers

    EIN 264554082 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  81. South Dakota Congress of Parents and Teachers

    EIN 301427990 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. South Dakota Congress of Parents and Teachers

    EIN 364077196 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. South Dakota Congress of Parents and Teachers

    EIN 364077206 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. South Dakota Congress of Parents and Teachers

    EIN 364077216 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  85. South Dakota Congress of Parents and Teachers

    EIN 460332242 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. South Dakota Congress of Parents and Teachers

    EIN 460339611 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. South Dakota Congress of Parents and Teachers

    EIN 460367783 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. South Dakota Congress of Parents and Teachers

    EIN 460378166 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  89. South Dakota Congress of Parents and Teachers

    EIN 460389119 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. South Dakota Congress of Parents and Teachers

    EIN 460391627 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. South Dakota Congress of Parents and Teachers

    EIN 460396123 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  92. South Dakota Congress of Parents and Teachers

    EIN 460398062 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. South Dakota Congress of Parents and Teachers

    EIN 460398193 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. South Dakota Congress of Parents and Teachers

    EIN 460398465 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. South Dakota Congress of Parents and Teachers

    EIN 460398927 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  96. South Dakota Congress of Parents and Teachers

    EIN 460400374 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  97. South Dakota Congress of Parents and Teachers

    EIN 460400982 · Headquarters: Brookings, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. South Dakota Congress of Parents and Teachers

    EIN 460402607 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. South Dakota Congress of Parents and Teachers

    EIN 460402896 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  100. South Dakota Congress of Parents and Teachers

    EIN 460403617 · Headquarters: Piedmont, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

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