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. Alpha Sigma Alpha Sorority

    EIN 882180627 · Headquarters: Parker, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. Alpha Sigma Alpha Sorority

    EIN 900788191 · Headquarters: Virginia Beach, VA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  3. Alpha Sigma Alpha Sorority

    EIN 912093429 · Headquarters: Indianapolis, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Alpha Sigma Alpha Sorority

    EIN 921974638 · Headquarters: Fort Wayne, IN, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  5. Alpha Sigma Alpha Sorority

    EIN 923145896 · Headquarters: Downingtown, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Alpha Sigma Alpha Sorority - Southern California Alumnae Chapte

    EIN 933827342 · Headquarters: San Jacinto, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. Alpha Sigma Alpha Sorority -Pikes Peak Colorado Alumnae Chapter

    EIN 843858919 · Headquarters: Monument, CO, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  8. Alpha Sigma Alpha Sorority Beta Epsilon Chapter

    EIN 546052245 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. ALPHA SIGMA ALPHA SORORITY Beta Lambda Chapter

    EIN 386147351 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  10. ALPHA SIGMA ALPHA SORORITY Beta Nu Chapter

    EIN 616054678 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. ALPHA SIGMA ALPHA SORORITY Beta Rho Chapter

    EIN 366206680 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Alpha Sigma Alpha Sorority Beta Sigma Chapter

    EIN 436050132 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. ALPHA SIGMA ALPHA SORORITY Beta Theta Chapter

    EIN 386108040 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  14. ALPHA SIGMA ALPHA SORORITY Delta Gamma Chapter

    EIN 473850270 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  15. Alpha Sigma Alpha Sorority Delta Iota Chapter

    EIN 237166252 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. ALPHA SIGMA ALPHA SORORITY Delta Upsilon Chapter

    EIN 431269323 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  17. ALPHA SIGMA ALPHA SORORITY Epsilon Epsilon Chapter

    EIN 237265429 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. ALPHA SIGMA ALPHA SORORITY Epsilon Gamma Chapter

    EIN 431336820 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  19. ALPHA SIGMA ALPHA SORORITY Eta Eta Chapter

    EIN 486134777 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. ALPHA SIGMA ALPHA SORORITY Gamma Clio Chapter

    EIN 300551899 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  21. ALPHA SIGMA ALPHA SORORITY Gamma Iota Chapter

    EIN 166067895 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. ALPHA SIGMA ALPHA SORORITY Gamma Phi Chapter

    EIN 472049447 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. ALPHA SIGMA ALPHA SORORITY Nu Nu Chapter

    EIN 236437785 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. ALPHA SIGMA ALPHA SORORITY Phi Phi Chapter

    EIN 436067616 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  25. ALPHA SIGMA ALPHA SORORITY Theta Gamma Chapter

    EIN 320096892 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. ALPHA SIGMA ALPHA SORORITY Theta Psi Chapter

    EIN 473877847 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  27. Alpha Sigma Alpha Sorority Theta Upsilon Chapter

    EIN 463542401 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. ALPHA SIGMA ALPHA SORORITY Zeta Iota Chapter

    EIN 431668615 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  29. Alpha Sigma Alpha Sorority Zeta Lambda Chapter

    EIN 431706428 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  30. Alpha Sigma Alpha Sorority Zeta Phi Chapter

    EIN 352070140 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Alpha Sigma Alpha Sorority Zeta Tau Chapter

    EIN 352059626 · Headquarters: Indianapolis, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. Alpha Sigma Alumnae Incorported

    EIN 391706813 · Headquarters: Cudahy, WI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  33. Alpha Sigma Building Association

    EIN 916029737 · Headquarters: Othello, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Alpha Sigma Chapter

    EIN 941188566 · Headquarters: MORAGA, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Alpha Sigma Chapter House Corporation

    EIN 271871433 · Headquarters: Phoenix, AZ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Alpha Sigma Chapter of Phi Iota Alpha Fraternity Inc

    EIN 473296072 · Headquarters: Cumming, GA, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  37. Alpha Sigma House Corp

    EIN 020425539 · Headquarters: DOVER, NH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Alpha Sigma Kappa - Women in Technical Studies

    EIN 843883015 · Headquarters: Boston, MA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Alpha Sigma Kappa- Utk

    EIN 874817907 · Headquarters: Knoxville, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Alpha Sigma Nu

    EIN 476039541 · Headquarters: Omaha, NE, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Alpha Sigma Nu Incorporated Xavier

    EIN 930744503 · Headquarters: Cincinnati, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Alpha Sigma Omega Association

    EIN 237328843 · Headquarters: TUCSON, AZ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Alpha Sigma Phi

    EIN 451590103 · Headquarters: Tempe, AZ, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  44. Alpha Sigma Phi - Delta Tau Alumni Association

    EIN 883717963 · Headquarters: Murray, KY, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Alpha Sigma Phi - San Antonio

    EIN 991144370 · Headquarters: Carmel, IN, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  46. Alpha Sigma Phi - Texas

    EIN 992051150 · Headquarters: Austin, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  47. Alpha Sigma Phi Beta Chi Chapter Memorial Scholarship Fund

    EIN 521284528 · Headquarters: Washington, DC, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  48. Alpha Sigma Phi Fraternity at University of Wisconsin-Madison

    EIN 461455834 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  49. Alpha Sigma Phi Fraternity Inc

    EIN 314359813 · Headquarters: CARMEL, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Alpha Sigma Phi Fraternity Inc

    EIN 475228452 · Headquarters: Missoula, MT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  51. Alpha Sigma Phi Fraternity Inc

    EIN 811929437 · Headquarters: Danville, VA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  52. Alpha Sigma Phi Fraternity Inc

    EIN 812494141 · Headquarters: Kearney, NE, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  53. Alpha Sigma Phi Fraternity Inc

    EIN 842200267 · Headquarters: Williamsburg, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  54. Alpha Sigma Phi Fraternity Inc

    EIN 842200798 · Headquarters: San Angelo, TX, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  55. Alpha Sigma Phi Fraternity Inc

    EIN 992210973 · Headquarters: Modesto, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Alpha Sigma Phi Inc

    EIN 471782188 · Headquarters: Fort Lauderdale, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  57. Alpha Sigma Psi Incorporated

    EIN 030180109 · Headquarters: Charlotte, VT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Alpha Sigma Slpha Sorority

    EIN 352102686 · Headquarters: Indianapolis, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  59. Alpha Sigma Society Inc

    EIN 953214131 · Headquarters: Ridgefield, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Alpha Sigma Sorority Inc

    EIN 461443029 · Headquarters: Brooklyn, NY, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  61. Alpha Sigma Tau

    EIN 223065984 · Headquarters: Newark, NJ, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  62. Alpha Sigma Tau

    EIN 300507823 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  63. Alpha Sigma Tau

    EIN 382971008 · Headquarters: Allendale, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Alpha Sigma Tau - Alpha Omicron Chapter

    EIN 263537082 · Headquarters: Clarion, PA, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  65. Alpha Sigma Tau - Nashville Alumnae Chapter

    EIN 201913220 · Headquarters: Nashville, TN, US · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  66. Alpha Sigma Tau Delta Mu Chapter

    EIN 760842397 · Headquarters: Lebanon, TN, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  67. Alpha Sigma Tau Delta Pi

    EIN 582499700 · Headquarters: Atlanta, GA, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  68. Alpha Sigma Tau Rho Chapter Alumnae Association

    EIN 460709442 · Headquarters: Durant, OK, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  69. Alpha Sigma Tau Sorority Inc Alpha Psi Chapter

    EIN 844832825 · Headquarters: CEDAR FALLS, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  70. Alpha Sigma Tau Sorority Inc Beta Rho Chapter

    EIN 833938548 · Headquarters: RUSSELLVILLE, AR, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  71. Alpha Sigma Tau Sorority Inc Delta Eta Chapter

    EIN 834290781 · Headquarters: NASHVILLE, TN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  72. Alpha Sigma Tau Sorority Inc Epsilon Phi Chapter

    EIN 834569826 · Headquarters: WINONA, MN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Alpha Sigma Tau Sorority Inc Epsilon Pi Chapter

    EIN 833368849 · Headquarters: PROVIDENCE, RI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Alpha Sigma Tau Sorority Inc Gamma Rho Chapter

    EIN 352653295 · Headquarters: SOUTH OORANGE, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Alpha Sigma Tau Sorority Inc Zeta Tau Chapter

    EIN 611919928 · Headquarters: FARMVILLE, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Alpha Sligm Alpha Sorority

    EIN 812947299 · Headquarters: Indianapolis, IN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Alpha Star Council No 71 Allied Masonic Degrees

    EIN 201913205 · Headquarters: Roanoke, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Alpha Stow Housing Corporation

    EIN 341762323 · Headquarters: Akron, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  79. Alpha Study Group Inc

    EIN 813032067 · Headquarters: Austin, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Alpha Tau Alumni Assn

    EIN 426076513 · Headquarters: DES MOINES, IA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  81. Alpha Tau Alumni Chapter of Pi Kappa Phi

    EIN 882374850 · Headquarters: Silver Spring, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Alpha Tau Chapter of Alpha Chi Omega Fraternity Inc

    EIN 020223236 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  83. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 237235850 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 251311234 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 251694927 · Headquarters: Indiana, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 251694929 · Headquarters: Erie, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 320457746 · Headquarters: San Jose, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 365091824 · Headquarters: Jacksonville, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 472196854 · Headquarters: Kingston, RI, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  90. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 510204760 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 510204776 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 510204804 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 510204817 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  94. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 833899895 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 882355103 · Headquarters: Ada, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 900527030 · Headquarters: Northridge, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 900670785 · Headquarters: Irvine, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 943035144 · Headquarters: Decatur, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Alpha Tau Delta National Fraternity for Professional Nurses

    EIN 954097283 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Alpha Tau Omega

    EIN 586074040 · Headquarters: STATESBORO, GA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

First page and all pages