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 Phi Alpha Dental Hygiene Honor Society

    EIN 364092660 · Headquarters: Kirtland, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 364116983 · Headquarters: Bowling Green, KY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 364127909 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 364127912 · Headquarters: Marysville, MI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  5. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 366159769 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 371276805 · Headquarters: Mattoon, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 371714710 · Headquarters: Champaign, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 383899613 · Headquarters: Sanford, NC, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  9. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 386075334 · Headquarters: Fort Wayne, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 386120944 · Headquarters: Detroit, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 411811460 · Headquarters: Mankato, MN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 416056369 · Headquarters: MINNEAPOLIS, MN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 436070091 · Headquarters: Kansas City, MO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  14. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 453345293 · Headquarters: Anaheim, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 460353495 · Headquarters: Vermillion, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 462183534 · Headquarters: Troy, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 462536594 · Headquarters: Jackson, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 464055924 · Headquarters: South Jordan, UT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 476046144 · Headquarters: Lincoln, NE, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 521381672 · Headquarters: Cumberland, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 541108004 · Headquarters: Powhatan, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 550514752 · Headquarters: MORGANTOWN, WV, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 556029598 · Headquarters: West Liberty, WV, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 566076572 · Headquarters: Chapel Hill, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 581363062 · Headquarters: AUGUSTA, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 582531712 · Headquarters: Rome, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 596182244 · Headquarters: Baltimore, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 680656917 · Headquarters: Sheridan, WY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 710675817 · Headquarters: Little Rock, AR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 720859675 · Headquarters: New Orleans, LA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 720866018 · Headquarters: Monroe, LA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  32. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 731066763 · Headquarters: Midwest City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 731073414 · Headquarters: Oklahoma City, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 742099350 · Headquarters: Beaumont, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 742613733 · Headquarters: San Antonio, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 742947715 · Headquarters: Bryan, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 746081401 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 751645222 · Headquarters: Denton, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 752862314 · Headquarters: McKinney, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 756057749 · Headquarters: DALLAS, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 841165327 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 850404887 · Headquarters: Albuquerque, NM, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 861077572 · Headquarters: Carbondale, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 870406965 · Headquarters: Ogden, UT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 880249938 · Headquarters: Las Vegas, NV, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 880462569 · Headquarters: Reno, NV, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 900705181 · Headquarters: Big Rapids, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911238263 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911873279 · Headquarters: Winnipeg, CA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895152 · Headquarters: Albany, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895153 · Headquarters: Farmingdale, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895155 · Headquarters: Farmington, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  53. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895173 · Headquarters: Blackwood, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895416 · Headquarters: Worcester, MA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895419 · Headquarters: Gainesville, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  56. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895689 · Headquarters: Lakewood, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895694 · Headquarters: Wilmington, DE, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  58. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911895702 · Headquarters: Perrysburg, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911940779 · Headquarters: Vancouver, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 911940781 · Headquarters: West Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 912048912 · Headquarters: Harrisburg, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 912048914 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 912069533 · Headquarters: Virginia Beach, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 943467738 · Headquarters: Hillsboro, OR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 956149461 · Headquarters: Loma Linda, CA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  66. Sigma Phi Alpha Dental Hygiene Honors Society

    EIN 364017885 · Headquarters: Chattanooga, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Sigma Phi Alpha National Dental Hygiene Honor Society

    EIN 364119468 · Headquarters: Wichita, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Sigma Phi Beta Building Association

    EIN 866053062 · Headquarters: TUCSON, AZ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Sigma Phi Chi Sorority

    EIN 421206554 · Headquarters: Davenport, IA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Sigma Phi Delta

    EIN 370661730 · Headquarters: Champaign, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Sigma Phi Delta - Beta Omicron Chapter

    EIN 472785892 · Headquarters: Columbia, MO, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  72. Sigma Phi Delta Bk Alumni Association

    EIN 880865112 · Headquarters: Bartonsville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Sigma Phi Delta Fraternity

    EIN 480372150 · Headquarters: MANHATTAN, KS, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Sigma Phi Educational Foundation

    EIN 133269746 · Headquarters: TUCSON, AZ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Sigma Phi Educational Foundation

    EIN 942764528 · Headquarters: Moraga, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Sigma Phi Epsilon

    EIN 430740569 · Headquarters: ROLLA, MO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  77. Sigma Phi Epsilon

    EIN 881017483 · Headquarters: Crystal Lake, IL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  78. Sigma Phi Epsilon - Oh Rho

    EIN 333157412 · Headquarters: SPRINGBORO, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Sigma Phi Epsilon - Oh Sigma

    EIN 872434203 · Headquarters: Strongsville, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Sigma Phi Epsilon Alumni Association of the Dayton Ohio Area

    EIN 873658613 · Headquarters: Springboro, OH, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  81. Sigma Phi Epsilon Alumni Corporation

    EIN 351007721 · Headquarters: MUNCIE, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Sigma Phi Epsilon Alumni of George Washington University

    EIN 522225047 · Headquarters: Washington, DC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Sigma Phi Epsilon Building Assoc Colorado Alpha

    EIN 840392482 · Headquarters: RICHMOND, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  84. Sigma Phi Epsilon Ca Iota

    EIN 422752806 · Headquarters: CATHEDRAL CTY, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Sigma Phi Epsilon California Eta Chapter

    EIN 946138710 · Headquarters: Davis, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Sigma Phi Epsilon Florida Zeta Alumni Volunteer Corporation

    EIN 452408227 · Headquarters: Wesley Chapel, FL, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  87. Sigma Phi Epsilon Foundation

    EIN 476036836 · Headquarters: LINCOLN, NE, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Sigma Phi Epsilon Fraternity

    EIN 470298365 · Headquarters: LINCOLN, NE, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  89. Sigma Phi Epsilon Fraternity

    EIN 540379370 · Headquarters: RICHMOND, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. Sigma Phi Epsilon Fraternity

    EIN 911981486 · Headquarters: ATHENS, GA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Sigma Phi Epsilon Fraternity - University of Virginia

    EIN 851316697 · Headquarters: Charlottesville, VA, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  92. Sigma Phi Epsilon Fraternity Alumni Inc

    EIN 411348966 · Headquarters: MINNEAPOLIS, MN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Sigma Phi Epsilon Fraternity Alumni Oregon Beta Chapter

    EIN 930280690 · Headquarters: EUGENE, OR, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  94. Sigma Phi Epsilon Fraternity California Alpha Chapter

    EIN 942965674 · Headquarters: Berkeley, CA, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  95. Sigma Phi Epsilon Fraternity California Chi Chapter

    EIN 954566487 · Headquarters: Glendale, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  96. Sigma Phi Epsilon Fraternity California Psi Chapter

    EIN 911810577 · Headquarters: MALIBU, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  97. Sigma Phi Epsilon Fraternity Colorado Gamma Chapter

    EIN 920264266 · Headquarters: FORT COLLINS, CO, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  98. Sigma Phi Epsilon Fraternity Florida Alpha Chapter

    EIN 812277045 · Headquarters: TUSCALOOSA, AL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Sigma Phi Epsilon Fraternity IA Gamma Chapter

    EIN 420524734 · Headquarters: Coralville, IA, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  100. Sigma Phi Epsilon Fraternity Inc

    EIN 141988001 · Headquarters: FORT MYERS, FL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

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