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. Gamma Sigma Sigma National Service Soroity

    EIN 352569802 · Headquarters: Salem, VA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  2. Gamma Sigma Sigma National Service Sorority

    EIN 232000126 · Headquarters: Bethlehem, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  3. Gamma Sigma Sigma National Service Sorority

    EIN 236429774 · Headquarters: University Park, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  4. Gamma Sigma Sigma National Service Sorority

    EIN 237033917 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  5. Gamma Sigma Sigma National Service Sorority

    EIN 237033922 · Headquarters: Annville, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Gamma Sigma Sigma National Service Sorority

    EIN 237033926 · Headquarters: Storrs, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  7. Gamma Sigma Sigma National Service Sorority

    EIN 237033928 · Headquarters: Medford, NJ, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Gamma Sigma Sigma National Service Sorority

    EIN 237033932 · Headquarters: Indiana, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  9. Gamma Sigma Sigma National Service Sorority

    EIN 237033939 · Headquarters: Newark, DE, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  10. Gamma Sigma Sigma National Service Sorority

    EIN 237033945 · Headquarters: Bowling Green, KY, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  11. Gamma Sigma Sigma National Service Sorority

    EIN 237033947 · Headquarters: La Crosse, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  12. Gamma Sigma Sigma National Service Sorority

    EIN 237116808 · Headquarters: Loretto, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  13. Gamma Sigma Sigma National Service Sorority

    EIN 237116811 · Headquarters: Jefferson City, TN, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  14. Gamma Sigma Sigma National Service Sorority

    EIN 237116816 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  15. Gamma Sigma Sigma National Service Sorority

    EIN 237116818 · Headquarters: Plymouth, MN, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  16. Gamma Sigma Sigma National Service Sorority

    EIN 237305024 · Headquarters: Orono, ME, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  17. Gamma Sigma Sigma National Service Sorority

    EIN 237305032 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  18. Gamma Sigma Sigma National Service Sorority

    EIN 237393664 · Headquarters: Clemson, SC, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  19. Gamma Sigma Sigma National Service Sorority

    EIN 237455260 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  20. Gamma Sigma Sigma National Service Sorority

    EIN 242650489 · Headquarters: Atlanta, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  21. Gamma Sigma Sigma National Service Sorority

    EIN 251727128 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  22. Gamma Sigma Sigma National Service Sorority

    EIN 300942036 · Headquarters: New Orleans, LA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  23. Gamma Sigma Sigma National Service Sorority

    EIN 320332563 · Headquarters: Fort Valley, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  24. Gamma Sigma Sigma National Service Sorority

    EIN 320332566 · Headquarters: Jacksonville, AL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  25. Gamma Sigma Sigma National Service Sorority

    EIN 320332572 · Headquarters: McKees Rocks, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  26. Gamma Sigma Sigma National Service Sorority

    EIN 320367333 · Headquarters: Erie, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  27. Gamma Sigma Sigma National Service Sorority

    EIN 320460778 · Headquarters: Pleasantville, NY, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  28. Gamma Sigma Sigma National Service Sorority

    EIN 320497632 · Headquarters: California, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  29. Gamma Sigma Sigma National Service Sorority

    EIN 320498532 · Headquarters: Cypress, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  30. Gamma Sigma Sigma National Service Sorority

    EIN 352428014 · Headquarters: Erie, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  31. Gamma Sigma Sigma National Service Sorority

    EIN 352567997 · Headquarters: Moon Township, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  32. Gamma Sigma Sigma National Service Sorority

    EIN 352573108 · Headquarters: Frisco, TX, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  33. Gamma Sigma Sigma National Service Sorority

    EIN 364672332 · Headquarters: Orlando, FL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  34. Gamma Sigma Sigma National Service Sorority

    EIN 364715573 · Headquarters: Elizabeth City, NC, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  35. Gamma Sigma Sigma National Service Sorority

    EIN 364721161 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  36. Gamma Sigma Sigma National Service Sorority

    EIN 364721879 · Headquarters: Montgomery, AL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  37. Gamma Sigma Sigma National Service Sorority

    EIN 364767763 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  38. Gamma Sigma Sigma National Service Sorority

    EIN 364847146 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  39. Gamma Sigma Sigma National Service Sorority

    EIN 371654606 · Headquarters: Norfolk, VA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  40. Gamma Sigma Sigma National Service Sorority

    EIN 371738708 · Headquarters: Halifax, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  41. Gamma Sigma Sigma National Service Sorority

    EIN 371777871 · Headquarters: Prosper, TX, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  42. Gamma Sigma Sigma National Service Sorority

    EIN 371834003 · Headquarters: Dayton, OH, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  43. Gamma Sigma Sigma National Service Sorority

    EIN 384010309 · Headquarters: McKinney, TX, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  44. Gamma Sigma Sigma National Service Sorority

    EIN 396105413 · Headquarters: Menomonie, WI, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  45. Gamma Sigma Sigma National Service Sorority

    EIN 416058903 · Headquarters: Duluth, MN, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  46. Gamma Sigma Sigma National Service Sorority

    EIN 436072748 · Headquarters: Cape Girardeau, MO, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  47. Gamma Sigma Sigma National Service Sorority

    EIN 464108894 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  48. Gamma Sigma Sigma National Service Sorority

    EIN 510581097 · Headquarters: Longwood, FL, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  49. Gamma Sigma Sigma National Service Sorority

    EIN 526068590 · Headquarters: LENOIR, NC, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  50. Gamma Sigma Sigma National Service Sorority

    EIN 561759888 · Headquarters: Greenville, NC, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  51. Gamma Sigma Sigma National Service Sorority

    EIN 582225072 · Headquarters: Dahlonega, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  52. Gamma Sigma Sigma National Service Sorority

    EIN 582366937 · Headquarters: Milledgeville, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  53. Gamma Sigma Sigma National Service Sorority

    EIN 586055046 · Headquarters: Athens, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  54. Gamma Sigma Sigma National Service Sorority

    EIN 611681411 · Headquarters: Montgomery, AL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  55. Gamma Sigma Sigma National Service Sorority

    EIN 611757656 · Headquarters: Passadumkeag, ME, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  56. Gamma Sigma Sigma National Service Sorority

    EIN 611799883 · Headquarters: Memphis, TN, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  57. Gamma Sigma Sigma National Service Sorority

    EIN 752904063 · Headquarters: Detroit, MI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  58. Gamma Sigma Sigma National Service Sorority

    EIN 760423872 · Headquarters: Prairie View, TX, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  59. Gamma Sigma Sigma National Service Sorority

    EIN 900216580 · Headquarters: League City, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  60. Gamma Sigma Sigma National Service Sorority

    EIN 900216642 · Headquarters: Daytona Beach, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  61. Gamma Sigma Sigma National Service Sorority

    EIN 900216645 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  62. Gamma Sigma Sigma National Service Sorority

    EIN 900216646 · Headquarters: Antioch, TN, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  63. Gamma Sigma Sigma National Service Sorority

    EIN 900216657 · Headquarters: Trappe, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  64. Gamma Sigma Sigma National Service Sorority

    EIN 900216662 · Headquarters: Rindge, NH, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  65. Gamma Sigma Sigma National Service Sorority

    EIN 900216754 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  66. Gamma Sigma Sigma National Service Sorority

    EIN 900216905 · Headquarters: Atlanta, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  67. Gamma Sigma Sigma National Service Sorority

    EIN 900216912 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  68. Gamma Sigma Sigma National Service Sorority

    EIN 900370295 · Headquarters: Bowling Green, KY, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  69. Gamma Sigma Sigma National Service Sorority

    EIN 900370306 · Headquarters: Harrisonburg, VA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  70. Gamma Sigma Sigma National Service Sorority

    EIN 900545095 · Headquarters: Richardson, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  71. Gamma Sigma Sigma National Srvice Sorority

    EIN 611681213 · Headquarters: Largo, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  72. Gamma Tau Affiliated House Corp of Gamma Phi Beta

    EIN 832758147 · Headquarters: ST LOUIS, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Gamma Tau Beta

    EIN 473712645 · Headquarters: North Hollywood, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  74. Gamma Tau Chapter Housing Corp

    EIN 760516664 · Headquarters: FRIENDSWOOD, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Gamma Tau Chapter of Alpha Chi Omega Fraternity Inc

    EIN 736103530 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  76. Gamma Tau Chapter of Pi Kappa Alpha Inc

    EIN 273196152 · Headquarters: Queensbury, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Gamma Tau Housing Corporation

    EIN 421765519 · Headquarters: Portage, MI, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  78. Gamma Tau Inc

    EIN 586035308 · Headquarters: DUNWOODY, GA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  79. Gamma Tau Zeta

    EIN 933020102 · Headquarters: South Holland, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. Gamma Theta Chapter of Alpha Chi Omega Fraternity Inc

    EIN 520613163 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Gamma Theta Hermandad De Sigma Iota Alpha Inc

    EIN 923480107 · Headquarters: new york, NY, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  82. Gamma Theta House Association of Kappa Kappa Gamma Fraternity Inc

    EIN 510238279 · Headquarters: DES MOINES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Gamma Theta Incorporated

    EIN 582022694 · Headquarters: TUSCALOOSA, AL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Gamma Theta of Sigma Delta Tau Inc

    EIN 222992192 · Headquarters: ITHACA, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  85. Gamma Theta Upsilon

    EIN 814231175 · Headquarters: Marquette, MI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  86. Gamma Theta Upsilon

    EIN 825036245 · Headquarters: Marquette, MI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  87. Gamma Theta Upsilon

    EIN 830759074 · Headquarters: GREENVILLE, NC, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  88. Gamma Theta Upsilon - Iota Lambda Chapter

    EIN 272576522 · Headquarters: New Orleans, LA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  89. Gamma Upsilon Alumni Association of Kappa Sigma Inc

    EIN 900646380 · Headquarters: HIGHLAND PARK, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Gamma Upsilon Chapter of Alpha Chi Omega Fraternity Inc

    EIN 746053751 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  91. Gamma Upsilon Chapter of Alpha Tau Omega

    EIN 420111735 · Headquarters: AMES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Gamma Upsilon House Corp

    EIN 486117534 · Headquarters: COLUMBUS, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Gamma Upsilon House Corp

    EIN 570891634 · Headquarters: STARKVILLE, MS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Gamma Upsilon Housing Association

    EIN 237397127 · Headquarters: OXFORD, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  95. Gamma XI Alumni of Delta Sigma Phi

    EIN 752143093 · Headquarters: Dallas, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  96. Gamma Xi Chapter House Corp

    EIN 480906280 · Headquarters: WICHITA, KS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  97. Gamma Xi Chapter Housing Corporation

    EIN 522422083 · Headquarters: CAMPBELL, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Gamma Xi Chapter of Alpha Chi Omega Fraternity

    EIN 386095248 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Gamma Xi House Corporation of Delta Gamma Inc

    EIN 756044543 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Gamma Xi Nu Chapter an Unincorporated Assoc of Omega Psi

    EIN 992494011 · Headquarters: Fresno, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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