Nonprofits in Stillwater, Oklahoma

Nonprofits in Stillwater, Oklahoma. Browse 1,006 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. Tau Beta Sigma Honorary Band Sorority

    EIN 900398065 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  2. Tau Beta Sigma Honorary Band Sorority

    EIN 900398066 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  3. Tau Beta Sigma Honorary Band Sorority

    EIN 900398067 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  4. Tau Beta Sigma Honorary Band Sorority

    EIN 900522124 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  5. Tau Beta Sigma Honorary Band Sorority

    EIN 900522125 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  6. Tau Beta Sigma Honorary Band Sorority

    EIN 900522126 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  7. Tau Beta Sigma Honorary Band Sorority

    EIN 900522127 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  8. Tau Beta Sigma Honorary Band Sorority

    EIN 900683283 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  9. Tau Beta Sigma Honorary Band Sorority

    EIN 900683297 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  10. Tau Beta Sigma Honorary Band Sorority

    EIN 900683317 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  11. Tau Beta Sigma Honorary Band Sorority

    EIN 900683323 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  12. Tau Beta Sigma Honorary Band Sorority

    EIN 900683331 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  13. Tau Beta Sigma Honorary Band Sorority

    EIN 911916676 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  14. Tau Beta Sigma Honorary Society

    EIN 912039762 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  15. Tau Beta Sigma Honorary Sorority

    EIN 510215651 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  16. Tau Beta Sigma Honorary Sorority

    EIN 510227949 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  17. Tau Beta Sigma Honorary Sorority

    EIN 731006768 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  18. Tau Beta Sigma Honorary Sorority

    EIN 731006789 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  19. Tau Beta Sigma Honorary Sorority

    EIN 731006791 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  20. Tau Beta Sigma Honorary Sorority

    EIN 731006798 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  21. Tau Beta Sigma Honorary Sorority

    EIN 731006811 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  22. Tau Beta Sigma Honorary Sorority

    EIN 731006818 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  23. Tau Beta Sigma Honorary Sorority

    EIN 731006819 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  24. Tau Beta Sigma Honorary Sorority

    EIN 731006820 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  25. Tau Beta Sigma Honorary Sorority

    EIN 731006859 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  26. Tau Beta Sigma Honorary Sorority

    EIN 731006862 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  27. Tau Beta Sigma Honorary Sorority

    EIN 731275464 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  28. Tau Beta Sigma Honorary Sorority

    EIN 731275465 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  29. Tau Beta Sigma Honorary Sorority

    EIN 731297451 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  30. Tau Beta Sigma Honorary Sorority

    EIN 731297455 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  31. Tau Beta Sigma Honorary Sorority

    EIN 731342416 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  32. Tau Beta Sigma Honorary Sorority

    EIN 731342417 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  33. Tau Beta Sigma Honorary Sorority

    EIN 900096966 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  34. Tau Beta Sigma Honorary Sorority

    EIN 900152217 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  35. Tau Beta Sigma Honorary Sorority

    EIN 900425550 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  36. Tau Beta Sigma Honorary Sorority

    EIN 900425552 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  37. Tau Beta Sigma Honorary Sorority

    EIN 900456453 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  38. Tau Beta Sigma Honorary Sorority

    EIN 911961551 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  39. Tau Beta Sigma Honorary Sorority

    EIN 911961552 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  40. Tau Beta Sigma Honorary Sorority

    EIN 912115700 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  41. Tau Beta Sigma Kappa Delta

    EIN 612301248 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Tau Beta Sigma National Honorary Band Sorority

    EIN 900867619 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  43. Tau Beta Sigma National Honorary Band Sorority

    EIN 923324124 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Tau Beta Sigma National Honorary Band Sorority

    EIN 923420216 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Tau Beta Sigma National Honorary Band Sorority

    EIN 923445812 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Tau Beta Sigma National Honorary Band Sorority

    EIN 931650680 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Tau Beta Sigma National Honorary Band Sorority

    EIN 932706679 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Tau Beta Sigma National Honorary Band Sorority

    EIN 990513807 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Tau Beta Sigma National Honorary Band Sorority

    EIN 990857649 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Tau Beta Sigma National Honorary Band Sorority

    EIN 990881090 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Tau Beta Sigma National Honorary Band Sorority

    EIN 990910771 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Tau Beta Sigma National Honorary Band Sorority

    EIN 991357619 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Tau Beta Simga Honorary Band Sorority

    EIN 900241221 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  54. Tau Kappa Epsilon Fraternity Inc

    EIN 911811646 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  55. Technology Student Association

    EIN 731053246 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Tel Foundation

    EIN 471391457 · Headquarters: Stillwater, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Tele Commu Tech Sect of New Related Div of Ok Assoc Career & Tech Educ

    EIN 770644778 · Headquarters: Stillwater, OK, US · Public & Societal Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  58. Tennessee Auctioneers Association

    EIN 620860752 · Headquarters: STILLWATER, OK, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. Teubner Foundation

    EIN 731552711 · Headquarters: STILLWATER, OK, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  60. The Buel J Staton Charitable Trust

    EIN 686249451 · Headquarters: STILLWATER, OK, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2017 · Primary form: IRS Form 990-PF

  61. The Charles R Whitfield Charitable Foundation

    EIN 200100958 · Headquarters: Stillwater, OK, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  62. The Cornerstone Collective Inc

    EIN 413113393 · Headquarters: Stillwater, OK, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. The Eddie Sutton Foundation

    EIN 874651737 · Headquarters: STILLWATER, OK, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. The Humane Society of Stillwater Oklahoma Inc

    EIN 731317491 · Headquarters: Stillwater, OK, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. The Innovation Foundation at Oklahoma State University Inc

    EIN 237043186 · Headquarters: STILLWATER, OK, USA · Education · Latest available filing year: 2023 · Primary form: IRS Form 990

  66. The Jameson Family Foundation Inc

    EIN 030596306 · Headquarters: STILLWATER, OK, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2017 · Primary form: IRS Form 990-PF

  67. The Miracle Adoption Foundation

    EIN 731451213 · Headquarters: Stillwater, OK, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  68. The Oklahoma Association Teachers of Family and Consumer Sciences

    EIN 731579843 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. The Saville Center Inc

    EIN 731546193 · Headquarters: STILLWATER, OK, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. The Stillwater Chamber Singers Inc C/o Diane Graalman

    EIN 731333810 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  71. Theta Beta Alumni Association of Kappa Kappa Psi

    EIN 991193616 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Theta Chi Fraternity

    EIN 730593726 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  73. Theta Chi Fraternity

    EIN 731412407 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  74. Theta Chi Fraternity Inc

    EIN 861888475 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  75. Theta Education Fund

    EIN 921253315 · Headquarters: Stillwater, OK, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Theta Theta Alumni Association of Kappa Kappa Psi

    EIN 991192184 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Theta Zeta Alumni Association of Tau Beta Sigma

    EIN 331466033 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Three Strand Education Foundation Inc

    EIN 731611048 · Headquarters: Stillwater, OK, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  79. Three Strands Ministry Inc

    EIN 900777630 · Headquarters: Stillwater, OK, US · Religion Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  80. Thunderstorm Robotics

    EIN 203782122 · Headquarters: Stillwater, OK, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Tiny Paws Kitten Rescue Inc

    EIN 202636365 · Headquarters: Stillwater, OK, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Toastmasters International

    EIN 731404338 · Headquarters: Stillwater, OK, US · Public & Societal Benefit · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  83. Toastmasters International

    EIN 736103019 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  84. Town and Gown Theatre Inc

    EIN 730739753 · Headquarters: STILLWATER, OK, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. True Warrior Initiative Inc

    EIN 882357790 · Headquarters: Stillwater, OK, US · Public & Societal Benefit · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  86. Turning Point Ranch Association

    EIN 311726849 · Headquarters: STILLWATER, OK, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Twelve and Twenty-four Club of Stillwater Oklahoma

    EIN 873982159 · Headquarters: Stillwater, OK, US · Mental Health & Crisis Intervention · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Undivided Inc

    EIN 991507523 · Headquarters: Stillwater, OK, US · Mental Health & Crisis Intervention · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. United Daughters of the Confederacy

    EIN 474883490 · Headquarters: Stillwater, OK, US · Arts, Culture & Humanities · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  90. United Ostomy Association of America Inc

    EIN 942614131 · Headquarters: Stillwater, OK, US · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. United States Bowling Congress Inc

    EIN 204945290 · Headquarters: Stillwater, OK, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  92. United Way of Payne County Inc

    EIN 730602756 · Headquarters: STILLWATER, OK, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990

  93. Universidad Popular Autonoma Del Estado De Puebla Foundation

    EIN 521417995 · Headquarters: STILLWATER, OK, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  94. University Heights Baptist Foundation

    EIN 141854824 · Headquarters: Stillwater, OK, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  95. Vanguard Ministries International Inc

    EIN 842297078 · Headquarters: STILLWATER, OK, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  96. Veterans of Foreign Wars of the United States Dept of Oklahoma

    EIN 731337374 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  97. Veterans of Foreign Wars of the United States Dept of Oklahoma

    EIN 736103075 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Veterinarians as One Inclusive Community for Empowerment Osu Chap

    EIN 932940048 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Vfw Auxiliary Department of Oklahoma Inc

    EIN 825172630 · Headquarters: Stillwater, OK, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Visit Stillwater OK Inc

    EIN 465008441 · Headquarters: Stillwater, OK, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

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