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. Phi Sigma Iota Foreign Language National Honor Society Chi Omega

    EIN 300786926 · Headquarters: Meadville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Phi Sigma Iota Foreign Language National Honor Society-omega Tau

    EIN 612207894 · Headquarters: Meadville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Phi Sigma Kappa

    EIN 146030163 · Headquarters: Troy, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  4. Phi Sigma Kappa

    EIN 150537020 · Headquarters: ITHACA, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Phi Sigma Kappa

    EIN 222989747 · Headquarters: Furlong, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  6. Phi Sigma Kappa

    EIN 226108301 · Headquarters: HOBOKEN, NJ, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  7. Phi Sigma Kappa

    EIN 237007756 · Headquarters: NEW BRUNSWICK, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Phi Sigma Kappa

    EIN 237306224 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Phi Sigma Kappa

    EIN 300290695 · Headquarters: TROY, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  10. Phi Sigma Kappa

    EIN 311804534 · Headquarters: DAYTON, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Phi Sigma Kappa

    EIN 320295070 · Headquarters: AUBURN, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Phi Sigma Kappa

    EIN 351757496 · Headquarters: Valparaiso, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Phi Sigma Kappa

    EIN 351818614 · Headquarters: Bloomington, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Phi Sigma Kappa

    EIN 351834013 · Headquarters: Galena, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Phi Sigma Kappa

    EIN 410479442 · Headquarters: MINNEAPOLIS, MN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  16. Phi Sigma Kappa

    EIN 453809960 · Headquarters: VALDOSTA, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  17. Phi Sigma Kappa

    EIN 461324842 · Headquarters: Rochester, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Phi Sigma Kappa

    EIN 546053276 · Headquarters: Charlottesville, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Phi Sigma Kappa

    EIN 626051077 · Headquarters: Bolivar, TN, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  20. Phi Sigma Kappa

    EIN 731276420 · Headquarters: TULSA, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Phi Sigma Kappa

    EIN 770285040 · Headquarters: SN LUIS OBISP, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Phi Sigma Kappa

    EIN 900147457 · Headquarters: Kirksville, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Phi Sigma Kappa

    EIN 900400467 · Headquarters: Clemson, SC, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  24. Phi Sigma Kappa

    EIN 912053160 · Headquarters: PITTSBURGH, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Phi Sigma Kappa

    EIN 912053335 · Headquarters: Lookout Mountain, TN, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  26. Phi Sigma Kappa - Epsilon Mu Chapter

    EIN 273809377 · Headquarters: Conway, AR, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  27. Phi Sigma Kappa - Omega Deuteron Chapter

    EIN 951105120 · Headquarters: Los Angeles, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Phi Sigma Kappa 135 Greater Seattle Alumni

    EIN 912053343 · Headquarters: EDMONDS, WA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Phi Sigma Kappa Assoc of Illinois

    EIN 376046708 · Headquarters: Downers Grove, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Phi Sigma Kappa Association of State College

    EIN 256094010 · Headquarters: SEWICKLEY, PA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  31. Phi Sigma Kappa Delta Triton

    EIN 920724925 · Headquarters: Westerville, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Phi Sigma Kappa Epsilon Lambda Alumni Association

    EIN 200250584 · Headquarters: Farmington Hills, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Phi Sigma Kappa Foundation Inc

    EIN 236261152 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Phi Sigma Kappa Fraternity

    EIN 931268141 · Headquarters: HILLSBORO, OR, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  35. Phi Sigma Kappa Fraternity Epsilon Iota

    EIN 932343320 · Headquarters: Warrensburg, MO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  36. Phi Sigma Kappa Grand Chapter of Omicron

    EIN 046197951 · Headquarters: BOSTON, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Phi Sigma Kappa National Fraternity Phi Deuteron Chapter

    EIN 610442489 · Headquarters: Lexington, KY, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  38. Phi Sigma Kappa Nu Chapter

    EIN 240809399 · Headquarters: BETHLEHEM, PA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  39. Phi Sigma Kappa of Phi Theta at Shippensburg

    EIN 463968246 · Headquarters: shippensburg, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  40. Phi Sigma Kappa Omicron Deuteron Alumni Club

    EIN 912053307 · Headquarters: TUSCALOOSA, AL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  41. Phi Sigma Kappa Omicron Deuteron Chapter

    EIN 630164120 · Headquarters: TUSCALOOSA, AL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Phi Sigma Kappa Phi Deuteron Alumni Club

    EIN 912053315 · Headquarters: LEXINGTON, KY, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  43. Phi Sigma Kappa Tau Tetarton Housing Corporation

    EIN 342058725 · Headquarters: Martin, TN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  44. Phi Sigma Lota Foreign Language National Honor Society

    EIN 900920903 · Headquarters: Meadville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Phi Sigma Lota Foreign Language National Honor Society-chi Omicron

    EIN 371964973 · Headquarters: Meadville, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Phi Sigma Lota Foreign Language National Honor Society-chi Pi Chap

    EIN 384138726 · Headquarters: Meadville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Phi Sigma Phi National Fraternity I

    EIN 621474458 · Headquarters: SAN DIEGO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  48. Phi Sigma Pi - Beta Mu Chapter

    EIN 863080989 · Headquarters: washington, DC, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  49. Phi Sigma Pi - Beta Zeta Chapter

    EIN 842802778 · Headquarters: Athens, GA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  50. Phi Sigma Pi Alpha Zeta

    EIN 871737414 · Headquarters: York, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  51. Phi Sigma Pi Beta Beta Chapter

    EIN 815022147 · Headquarters: Kent, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Phi Sigma Pi Beta Lambda

    EIN 853677231 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  53. Phi Sigma Pi Gamma Mu Chapter

    EIN 853724666 · Headquarters: Mt Pleasant, MI, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  54. Phi Sigma Pi Gamma Theta Chapter

    EIN 844372512 · Headquarters: Baton Rouge, LA, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  55. Phi Sigma Pi National Honor Fraternity Inc

    EIN 236393069 · Headquarters: LANCASTER, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. Phi Sigma Pi National Honors Fraternity University of Nebraska

    EIN 263347554 · Headquarters: Lincoln, NE, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Phi Sigma Pi Zeta Delta

    EIN 820669174 · Headquarters: Fairfax, VA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  58. Phi Sigma Pi- Alpha Chapter

    EIN 842918722 · Headquarters: Warrensburg, MO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  59. Phi Sigma Pi-uncg Chapter

    EIN 853878864 · Headquarters: Greensboro, NC, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  60. Phi Sigma Rho Beta Delta Chapter

    EIN 992798399 · Headquarters: Northville, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Phi Sigma Rho Beta Gamma Chapter

    EIN 992752158 · Headquarters: Salt Lake City, UT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Phi Sigma Rho National Sorority

    EIN 200952368 · Headquarters: Gainesville, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Phi Sigma Rho National Sorority

    EIN 202534595 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Phi Sigma Rho National Sorority

    EIN 205781571 · Headquarters: Washington DC, DC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Phi Sigma Rho National Sorority

    EIN 270007798 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Phi Sigma Rho National Sorority

    EIN 271553343 · Headquarters: Storrs, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Phi Sigma Rho National Sorority

    EIN 271553367 · Headquarters: Ada, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Phi Sigma Rho National Sorority

    EIN 341687502 · Headquarters: Toledo, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Phi Sigma Rho National Sorority

    EIN 450492916 · Headquarters: New Brunswick, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Phi Sigma Rho National Sorority

    EIN 474915082 · Headquarters: Berkeley, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Phi Sigma Rho National Sorority

    EIN 611378746 · Headquarters: Lexington, KY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  72. Phi Sigma Rho National Sorority

    EIN 753148546 · Headquarters: Corvallis, OR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Phi Sigma Rho National Sorority

    EIN 830343254 · Headquarters: Irvine, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Phi Sigma Rho National Sorority

    EIN 830466066 · Headquarters: Wexford, PA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  75. Phi Sigma Rho National Sorority

    EIN 841813725 · Headquarters: Norfolk, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Phi Sigma Rho National Sorority

    EIN 851494025 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Phi Sigma Rho National Sorority

    EIN 851616377 · Headquarters: Cleveland, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Phi Sigma Rho National Sorority

    EIN 863895733 · Headquarters: Cambridge, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Phi Sigma Rho National Sorority Inc

    EIN 461958234 · Headquarters: Youngstown, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. Phi Sigma Rho Sorority - Alpha Omega Chapter

    EIN 923408826 · Headquarters: Akron, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Phi Sigma Rho Sorority - Beta Alpha Chapter

    EIN 923434277 · Headquarters: Tuscaloosa, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Phi Sigma Rho Sorority - Beta Beta Chapter

    EIN 923356860 · Headquarters: Raleigh, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Phi Sigma Rho Sorority Alpha Beta Chapter

    EIN 455386534 · Headquarters: Cincinnati, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Phi Sigma Rho Sorority Alpha Phi Chapter

    EIN 851559039 · Headquarters: College Station, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. Phi Sigma Rho Sorority Beta Chapter

    EIN 271553221 · Headquarters: Columbus, OH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Phi Sigma Rho Sorority Chi Chapter

    EIN 271553449 · Headquarters: La Jolla, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  87. Phi Sigma Rho Sorority Nu Chapter

    EIN 820560764 · Headquarters: Los Angeles, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  88. Phi Sigma Sigma

    EIN 237163947 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  89. Phi Sigma Sigma

    EIN 271269899 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. Phi Sigma Sigma

    EIN 271836834 · Headquarters: Sykesville, MD, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  91. Phi Sigma Sigma

    EIN 273450657 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Phi Sigma Sigma

    EIN 311105766 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Phi Sigma Sigma

    EIN 382855990 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Phi Sigma Sigma

    EIN 510485580 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Phi Sigma Sigma

    EIN 510485582 · Headquarters: Sykesville, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  96. Phi Sigma Sigma

    EIN 526056449 · Headquarters: Sykesville, MD, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  97. Phi Sigma Sigma

    EIN 581485431 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Phi Sigma Sigma

    EIN 581485435 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  99. Phi Sigma Sigma

    EIN 581485439 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Phi Sigma Sigma

    EIN 581485442 · Headquarters: Eldersburg, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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