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. Sigma Theta Tau Inc

    EIN 946110412 · Headquarters: Indianapolis, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Sigma Theta Tau Inc 88 Gamma Sigma Chapter

    EIN 510232369 · Headquarters: Albuquerque, NM, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. Sigma Theta Tau Inc Lambda Epsilon Chapter

    EIN 351811440 · Headquarters: INDIANAPOLIS, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Sigma Theta Tau International

    EIN 311242967 · Headquarters: Beaumont, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Sigma Theta Tau International

    EIN 311434334 · Headquarters: Thibodaux, LA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Sigma Theta Tau International

    EIN 320669478 · Headquarters: Phoenix, AZ, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Sigma Theta Tau International

    EIN 352749691 · Headquarters: San Diego, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  8. Sigma Theta Tau International

    EIN 382956984 · Headquarters: Detroit, MI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  9. Sigma Theta Tau International

    EIN 384304776 · Headquarters: Lee Summit, MO, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Sigma Theta Tau International

    EIN 611188427 · Headquarters: Louisville, KY, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  11. Sigma Theta Tau International

    EIN 900012733 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  12. Sigma Theta Tau International

    EIN 900757109 · Headquarters: San Marcos, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Sigma Theta Tau International

    EIN 900799589 · Headquarters: West Lafayette, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  14. Sigma Theta Tau International

    EIN 900799595 · Headquarters: Mahwah, NJ, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  15. Sigma Theta Tau International

    EIN 900799598 · Headquarters: Thomasville, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Sigma Theta Tau International

    EIN 900799602 · Headquarters: Boiling Springs, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  17. Sigma Theta Tau International

    EIN 900861732 · Headquarters: Peoria, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  18. Sigma Theta Tau International

    EIN 901697436 · Headquarters: Cleveland, TN, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  19. Sigma Theta Tau International - Alpha Gamma Eta 629

    EIN 365132748 · Headquarters: Mount Berry, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Sigma Theta Tau International 494 Phi Pi

    EIN 900738357 · Headquarters: LAS VEGAS, NV, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. Sigma Theta Tau International Alpha Alpha Chi at Large Chapter 596

    EIN 320685260 · Headquarters: Kerrville, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Sigma Theta Tau International Alpha Gamma Gamma 625

    EIN 372150256 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sigma Theta Tau International Alpha Omega Chapter

    EIN 237111293 · Headquarters: Williston Park, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Sigma Theta Tau International Honor Society of Nursing Delta Theta Chapter

    EIN 621092105 · Headquarters: ARLINGTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. Sigma Theta Tau International Inc

    EIN 046112795 · Headquarters: Milton, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Sigma Theta Tau International Inc

    EIN 066070315 · Headquarters: STORRS, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. Sigma Theta Tau International Inc

    EIN 236419889 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  28. Sigma Theta Tau International Inc

    EIN 237111290 · Headquarters: Old Bridge, NJ, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Sigma Theta Tau International Inc

    EIN 237111292 · Headquarters: New York, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  30. Sigma Theta Tau International Inc

    EIN 237114399 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Sigma Theta Tau International Inc

    EIN 237243783 · Headquarters: Amherst, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  32. Sigma Theta Tau International Inc

    EIN 301266827 · Headquarters: Anderson, SC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. Sigma Theta Tau International Inc

    EIN 311042686 · Headquarters: LaFayette, GA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Sigma Theta Tau International Inc

    EIN 311042717 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Sigma Theta Tau International Inc

    EIN 311242895 · Headquarters: Gwynedd Valley, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Sigma Theta Tau International Inc

    EIN 311242963 · Headquarters: South Portland, ME, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. Sigma Theta Tau International Inc

    EIN 311242973 · Headquarters: Chico, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Sigma Theta Tau International Inc

    EIN 311242976 · Headquarters: Bismarck, ND, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Sigma Theta Tau International Inc

    EIN 311246731 · Headquarters: Bourbonnais, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  40. Sigma Theta Tau International Inc

    EIN 311246734 · Headquarters: Rochester, MN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Sigma Theta Tau International Inc

    EIN 311309936 · Headquarters: University Park, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Sigma Theta Tau International Inc

    EIN 311309944 · Headquarters: Aurora, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Sigma Theta Tau International Inc

    EIN 311309952 · Headquarters: Fairfield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Sigma Theta Tau International Inc

    EIN 311309960 · Headquarters: Liberty, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Sigma Theta Tau International Inc

    EIN 311361603 · Headquarters: Staten Island, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Sigma Theta Tau International Inc

    EIN 311361606 · Headquarters: Charlotte, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Sigma Theta Tau International Inc

    EIN 311361616 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Sigma Theta Tau International Inc

    EIN 351928451 · Headquarters: Phoenix, AZ, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Sigma Theta Tau International Inc

    EIN 351928455 · Headquarters: Scranton, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Sigma Theta Tau International Inc

    EIN 351928461 · Headquarters: Murfreesboro, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Sigma Theta Tau International Inc

    EIN 351928463 · Headquarters: Notre Dame, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Sigma Theta Tau International Inc

    EIN 351930735 · Headquarters: Wichita Falls Texas, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Sigma Theta Tau International Inc

    EIN 351988128 · Headquarters: Normal, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  54. Sigma Theta Tau International Inc

    EIN 351988131 · Headquarters: Morrow, GA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Sigma Theta Tau International Inc

    EIN 351988134 · Headquarters: Lynchburg, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Sigma Theta Tau International Inc

    EIN 351988136 · Headquarters: Palmyra, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Sigma Theta Tau International Inc

    EIN 352693971 · Headquarters: Lebanon, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Sigma Theta Tau International Inc

    EIN 352734576 · Headquarters: Eugene, OR, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  59. Sigma Theta Tau International Inc

    EIN 352754933 · Headquarters: Louisville, KY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  60. Sigma Theta Tau International Inc

    EIN 356067857 · Headquarters: Indianapolis, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Sigma Theta Tau International Inc

    EIN 363314816 · Headquarters: State University, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Sigma Theta Tau International Inc

    EIN 363314831 · Headquarters: Erie, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Sigma Theta Tau International Inc

    EIN 363314855 · Headquarters: Berrien Springs, MI, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  64. Sigma Theta Tau International Inc

    EIN 363386701 · Headquarters: Dayton, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Sigma Theta Tau International Inc

    EIN 363479040 · Headquarters: Allentown, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Sigma Theta Tau International Inc

    EIN 363479041 · Headquarters: Brigantine, NJ, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Sigma Theta Tau International Inc

    EIN 363479068 · Headquarters: Wilson, NC, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. Sigma Theta Tau International Inc

    EIN 365066035 · Headquarters: Lodi, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Sigma Theta Tau International Inc

    EIN 365098635 · Headquarters: Ashland, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Sigma Theta Tau International Inc

    EIN 366159633 · Headquarters: Maywood, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Sigma Theta Tau International Inc

    EIN 383930237 · Headquarters: Chesapeake, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Sigma Theta Tau International Inc

    EIN 383930748 · Headquarters: Florence, SC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. Sigma Theta Tau International Inc

    EIN 384156949 · Headquarters: Bluffton, SC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Sigma Theta Tau International Inc

    EIN 384308670 · Headquarters: Greensburg, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Sigma Theta Tau International Inc

    EIN 384326575 · Headquarters: Fort Smith, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Sigma Theta Tau International Inc

    EIN 416053260 · Headquarters: Saint Paul, MN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Sigma Theta Tau International Inc

    EIN 416059486 · Headquarters: Minneapolis, MN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Sigma Theta Tau International Inc

    EIN 421284814 · Headquarters: Sioux City, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Sigma Theta Tau International Inc

    EIN 431426946 · Headquarters: Springfield, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Sigma Theta Tau International Inc

    EIN 510217372 · Headquarters: Newark, DE, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  81. Sigma Theta Tau International Inc

    EIN 510232361 · Headquarters: Buffalo, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Sigma Theta Tau International Inc

    EIN 510232363 · Headquarters: Greenville, SC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Sigma Theta Tau International Inc

    EIN 510232367 · Headquarters: Little Rock, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Sigma Theta Tau International Inc

    EIN 510232370 · Headquarters: Ventura, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Sigma Theta Tau International Inc

    EIN 510232375 · Headquarters: Kailua, HI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Sigma Theta Tau International Inc

    EIN 541146758 · Headquarters: Fairfax, VA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  87. Sigma Theta Tau International Inc

    EIN 621092017 · Headquarters: Orange, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  88. Sigma Theta Tau International Inc

    EIN 621092021 · Headquarters: Bronx, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Sigma Theta Tau International Inc

    EIN 621092241 · Headquarters: Edwardsville, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Sigma Theta Tau International Inc

    EIN 621092242 · Headquarters: Atlanta, GA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Sigma Theta Tau International Inc

    EIN 640907409 · Headquarters: Cleveland, MS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Sigma Theta Tau International Inc

    EIN 860988516 · Headquarters: Las Cruces, NM, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Sigma Theta Tau International Inc

    EIN 881878752 · Headquarters: Owosso, MI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Sigma Theta Tau International Inc

    EIN 882013115 · Headquarters: El Paso, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Sigma Theta Tau International Inc

    EIN 883505078 · Headquarters: Milwaukee, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Sigma Theta Tau International Inc

    EIN 883567168 · Headquarters: SLC, UT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Sigma Theta Tau International Inc

    EIN 883608830 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Sigma Theta Tau International Inc

    EIN 883841307 · Headquarters: New York, NY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Sigma Theta Tau International Inc

    EIN 900012729 · Headquarters: Hammond, LA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Sigma Theta Tau International Inc

    EIN 900012730 · Headquarters: Dubuque, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

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