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 Dakota Congress of Parents and Teachers

    EIN 460405501 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. South Dakota Congress of Parents and Teachers

    EIN 460405775 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  3. South Dakota Congress of Parents and Teachers

    EIN 460411319 · Headquarters: Yankton, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. South Dakota Congress of Parents and Teachers

    EIN 460428000 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. South Dakota Congress of Parents and Teachers

    EIN 460429014 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. South Dakota Congress of Parents and Teachers

    EIN 460433672 · Headquarters: Aberdeen, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  7. South Dakota Congress of Parents and Teachers

    EIN 460442197 · Headquarters: Redfield, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. South Dakota Congress of Parents and Teachers

    EIN 460442201 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. South Dakota Congress of Parents and Teachers

    EIN 460449528 · Headquarters: Renner, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  10. South Dakota Congress of Parents and Teachers

    EIN 460451154 · Headquarters: Hot Springs, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. South Dakota Congress of Parents and Teachers

    EIN 460456356 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  12. South Dakota Congress of Parents and Teachers

    EIN 810784811 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  13. South Dakota Congress of Parents and Teachers

    EIN 911796949 · Headquarters: Mitchell, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. South Dakota Congress of Parents and Teachers

    EIN 911837586 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. South Dakota Congress of Parents and Teachers

    EIN 911837606 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. South Dakota Congress of Parents Teachers

    EIN 872640192 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  17. South Dakota Congress of Parents-Harvey Dunn PTA

    EIN 460387654 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. South Dakota Corn Growers Association

    EIN 460392991 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. South Dakota Counseling Association

    EIN 460344378 · Headquarters: PLATTE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. South Dakota Country Music Organization

    EIN 471539877 · Headquarters: Garretson, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. South Dakota County Extension Agents Association Courthouse

    EIN 460344781 · Headquarters: Lemmon, SD, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  22. South Dakota Cpa Society

    EIN 237278623 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  23. South Dakota Cricket Association

    EIN 873718603 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  24. South Dakota Crop Improvment Association

    EIN 466014972 · Headquarters: BROOKINGS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. South Dakota Cutting Horse Association

    EIN 460370413 · Headquarters: FAITH, SD, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  26. South Dakota Defense Lawyers Association

    EIN 460431673 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. South Dakota Dental Association

    EIN 460363251 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  28. South Dakota Dinosaur Park

    EIN 883997079 · Headquarters: CHAMBERLAIN, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. South Dakota Draft Horse and Mule Breeders Association

    EIN 464980997 · Headquarters: Bath, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. South Dakota Education Association

    EIN 460191735 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. South Dakota Electric Utility Companies

    EIN 460220595 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  32. South Dakota Electrical Council

    EIN 416049880 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. South Dakota Elks Assoc Charitable & Welfare Trust Fund

    EIN 466016424 · Headquarters: YANKTON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  34. South Dakota Emergency Medical Services Association Inc

    EIN 460352015 · Headquarters: WEBSTER, SD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  35. South Dakota Engineering Society

    EIN 271720872 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. South Dakota Engineering Society

    EIN 460274280 · Headquarters: Brookings, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. South Dakota Equipment Dealers Association

    EIN 363616324 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. South Dakota Eventing Association

    EIN 882234452 · Headquarters: Worthing, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  39. South Dakota Family Career & Community Leaders of America Association

    EIN 466014736 · Headquarters: Mitchell, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. South Dakota Family Policy Council

    EIN 460408040 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  41. South Dakota Farm Bureau Federation

    EIN 460191750 · Headquarters: HURON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. South Dakota Farmhouse Fraternity

    EIN 460281563 · Headquarters: BROOKINGS, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. South Dakota Federation of Garden Clubs

    EIN 466012278 · Headquarters: Mitchell, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. South Dakota Ffa Foundation Inc

    EIN 460342843 · Headquarters: BATH, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. South Dakota Fieldmens Association

    EIN 460389626 · Headquarters: Madison, MN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. South Dakota Foundation of Family Medicine

    EIN 363453177 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. South Dakota Foundation of Independent Colleges

    EIN 466003958 · Headquarters: Sioux Falls, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  48. South Dakota Fraternal Congress

    EIN 460343476 · Headquarters: Chamberlain, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  49. South Dakota Friends of Traditional Music

    EIN 460339682 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. South Dakota Funeral Directors Association

    EIN 466012281 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  51. South Dakota Genealogical Society

    EIN 363348579 · Headquarters: Huron, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. South Dakota Golf Association

    EIN 460310847 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. South Dakota Golf Course Superintendents Association

    EIN 460387157 · Headquarters: Rapid City, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. South Dakota Grain & Feed Association

    EIN 460132910 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990

  55. South Dakota Guardianship Program Inc

    EIN 460366602 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. South Dakota Gun Owners

    EIN 272063425 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. South Dakota Health Care Association

    EIN 460272951 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. South Dakota Healthcare Social Work Association

    EIN 271417763 · Headquarters: Dallas, SD, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  59. South Dakota Hereford Association

    EIN 460229985 · Headquarters: WILLOW LAKE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. South Dakota High School Coaches Assn

    EIN 237297479 · Headquarters: Mitchell, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. South Dakota High School Rodeo Association

    EIN 460374473 · Headquarters: Reva, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. South Dakota Higher Education Association

    EIN 460424776 · Headquarters: Bruce, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. South Dakota Highway Patrol Assn

    EIN 460376168 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  64. South Dakota Home Builders Association

    EIN 460355151 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. South Dakota Horsemans Association

    EIN 363367700 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. South Dakota Hotel & Lodging Association

    EIN 460310469 · Headquarters: Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. South Dakota I F Y E Association

    EIN 460398305 · Headquarters: Iroquois, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. South Dakota Infection Control Council

    EIN 363281505 · Headquarters: BRITTON, SD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  69. South Dakota Insurance Guaranty

    EIN 466035349 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. South Dakota Investment Society

    EIN 460357043 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. South Dakota Ironsmiths and Welders Association

    EIN 371609805 · Headquarters: WHITE LAKE, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. South Dakota Junior Football Inc

    EIN 466037091 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. South Dakota Knights of Columbus

    EIN 460271365 · Headquarters: LOVELAND, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. South Dakota Land Improvement Contractors Association

    EIN 460354789 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  75. South Dakota Library Association

    EIN 237038623 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. South Dakota Life and Health Insurance Guaranty Association

    EIN 460418983 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. South Dakota Lodge of Masoni Research

    EIN 460374446 · Headquarters: Sturgis, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. South Dakota Manufactured Housing Association

    EIN 460325594 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. South Dakota Medical Records Association

    EIN 460341959 · Headquarters: Canistota, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. South Dakota Mines Center for Alumni Relations Advancement

    EIN 466011771 · Headquarters: Rapid City, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. South Dakota Multi-housing Association

    EIN 460351589 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  82. South Dakota Municipal League

    EIN 466003523 · Headquarters: FT PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. South Dakota Municipal League Group Return

    EIN 460356156 · Headquarters: FT PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. South Dakota National Guard Enlisted Association

    EIN 237449956 · Headquarters: Belle Fourche, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. South Dakota Network Against Family Violence and Sexual Assault Inc

    EIN 363792912 · Headquarters: SIOUX FALLS, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. South Dakota Newspaper Association Dba South Dakota Newsmedia Association

    EIN 460191836 · Headquarters: BROOKINGS, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  87. South Dakota Nonprofit Network

    EIN 861272487 · Headquarters: Fort Pierre, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. South Dakota Nurserymens Association

    EIN 460365387 · Headquarters: Brandon, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. South Dakota Nurses' Association

    EIN 460229846 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  90. South Dakota Occupational Therapy Association Inc

    EIN 363160856 · Headquarters: VALLEY SPRINGS, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. South Dakota Old Time Fiddlers Association Inc

    EIN 593793208 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  92. South Dakota Optometric Society

    EIN 466040533 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  93. South Dakota Ornithologists Union

    EIN 466013509 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. South Dakota Parent Connection

    EIN 460385808 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. South Dakota Parks and Recreation Association

    EIN 363912265 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. South Dakota Parks and Wildlife Foundation

    EIN 460387968 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. South Dakota Peace Officers Assoc

    EIN 460211937 · Headquarters: HURON, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. South Dakota Petroleum Marketers As

    EIN 460191795 · Headquarters: PIERRE, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. South Dakota Pharmacists Association

    EIN 460191834 · Headquarters: Pierre, SD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. South Dakota Planners Association

    EIN 460410357 · Headquarters: Sioux Falls, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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