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. Society of Mayflower Descendants in the State of Delaware

    EIN 371572073 · Headquarters: Hallandale Beach, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Society of Mayflower Descendants in the State of Florida Inc

    EIN 596166288 · Headquarters: Blairsville, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Society of Mayflower Descendants in the State of Kansas

    EIN 486119384 · Headquarters: Wichita, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Society of Mayflower Descendants in the State of Maryland

    EIN 526054808 · Headquarters: Chesapeake Beach, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Society of Mayflower Descendants in the State of Mn

    EIN 416049302 · Headquarters: Eagan, MN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Society of Mayflower Descendants in the State of Montana

    EIN 810401064 · Headquarters: BILLINGS, MT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Society of Mayflower Descendants in the State of Nj

    EIN 226041570 · Headquarters: MEDFORD LAKES, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. Society of Mayflower Descendants in the State of North Carolina

    EIN 237082888 · Headquarters: DENVER, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Society of Mayflower Descendants in the State of North Dakota

    EIN 237259393 · Headquarters: FARGO, ND, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Society of Mayflower Descendants in the State of Ohio

    EIN 346556109 · Headquarters: Cleveland, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. Society of Mayflower Descendants in the State of South Dakota

    EIN 237241746 · Headquarters: HOT SPRINGS, SD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Society of Mayflower Descendants in the State of West Virginia

    EIN 237095459 · Headquarters: Charleston, WV, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Society of Mayflower Descendants in the State of Wisconsin

    EIN 396056041 · Headquarters: Brookfield, WI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Society of Mayflower Descendants in the State of Wyoming

    EIN 900519674 · Headquarters: Powell, WY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Society of Mayflower Descendents in the State of New Hampshire

    EIN 026019761 · Headquarters: New London, NH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Society of Mayflower Desendents in the State of Arizona

    EIN 237159190 · Headquarters: Scottsdale, AZ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Society of Mexican-American Engineers & Scientists

    EIN 953135632 · Headquarters: Houston, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. Society of Michigan Chinese Amercican Professors

    EIN 850491712 · Headquarters: Ann Arbor, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Society of Michigan Ems Instructor Coordinators

    EIN 382748103 · Headquarters: ANN ARBOR, MI, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  20. Society of Midland Authors

    EIN 237177670 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Society of Military Spouses in Stem

    EIN 812700327 · Headquarters: Woodbridge, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Society of Military Widows Chapter 30

    EIN 800624583 · Headquarters: el paso, TX, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  23. Society of Missionaries of Mercy Inc

    EIN 521570088 · Headquarters: Colorado Springs, CO, US · Unknown & Unclassified · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  24. Society Of Missionaries Of St. Francis Xavier | Society Of Pilar

    EIN 263192462 · Headquarters: Pilar, Goa, India · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  25. Society of Moon & Star Pattern Glass

    EIN 471143221 · Headquarters: Hillsville, VA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Society of Musical Arts

    EIN 222391031 · Headquarters: Jersey City, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Society of Musiccrafters

    EIN 521689330 · Headquarters: Rockville, MD, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  28. Society of Myles Standish Descendants Inc

    EIN 814407737 · Headquarters: Montague, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Society of Nematologists

    EIN 526045070 · Headquarters: MESILLA PARK, NM, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  30. Society of Neurointerventional Surgery

    EIN 363836229 · Headquarters: FAIRFAX, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Society of Neuroscience

    EIN 741939326 · Headquarters: Galveston, TX, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  32. Society of New York Hospital Trust Uw

    EIN 136275362 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  33. Society of Novus Spiritus

    EIN 770256925 · Headquarters: CAMPBELL, CA, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  34. Society of Novus Spiritus Corporation

    EIN 208399991 · Headquarters: Las Vegas, NV, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  35. Society of Ohio Archivists Ohio State University Archives

    EIN 237236160 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  36. Society of Orphanages Tel Aviv New York Chapter Inc

    EIN 136205454 · Headquarters: New York, NY, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  37. Society of Orpheus & Bacchus

    EIN 061003238 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  38. Society of Ortho Bionomy International

    EIN 680061678 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  39. Society of Our Lady of Grace Inc

    EIN 061087760 · Headquarters: HARTFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Society of Our Lady of Mt Carmel Inc

    EIN 232077858 · Headquarters: Wilmington, DE, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Society of Our Lady of Mt Carmel of Rosebank

    EIN 133192052 · Headquarters: STATEN ISLAND, NY, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Society of Our Mother of Good Counsel

    EIN 300589713 · Headquarters: SUWANEE, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Society of Paper Money Collectors I Nc

    EIN 520858134 · Headquarters: Greenwood, SC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  44. Society of Pediatric Nurses

    EIN 202923004 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  45. Society of Pediatric Nurses

    EIN 232746248 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Society of Pediatric Nurses

    EIN 260689304 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  47. Society of Pediatric Nurses

    EIN 330589434 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Society of Pediatric Nurses

    EIN 364602998 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Society of Pediatric Nurses

    EIN 391959203 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Society of Pediatric Nurses

    EIN 462802211 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Society of Pediatric Nurses

    EIN 464080245 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  52. Society of Pediatric Nurses

    EIN 465326198 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  53. Society of Pediatric Nurses

    EIN 561901579 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Society of Pediatric Nurses

    EIN 752559790 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Society of Pediatric Nurses

    EIN 813209981 · Headquarters: Spokane, WA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  56. Society of Pediatric Nurses

    EIN 841448415 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Society of Pediatric Nurses

    EIN 861136446 · Headquarters: Chicago, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Society of Permanent Cosmetic Professionals

    EIN 943127991 · Headquarters: Tulsa, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Society of Petroleum Evaluation Engineers

    EIN 741486843 · Headquarters: HOUSTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Society of Petrophysicists & Well Log Analyst Foundation

    EIN 760164768 · Headquarters: HOUSTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  61. Society of Petrophysicists & Well Log Analysts

    EIN 730722152 · Headquarters: HOUSTON, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  62. Society of Petrophysicists and Well Log Analysts Inc

    EIN 464446577 · Headquarters: Hayward, CA, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  63. Society of Petrophysicists and Well Log Analysts Inc

    EIN 464456030 · Headquarters: Lubbock, TX, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  64. Society of Petrophysicists and Well Log Analysts Inc

    EIN 475070885 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Society of Petrophysicists and Well Log Analysts Inc

    EIN 721133291 · Headquarters: COVINGTON, LA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  66. Society of Petrophysicists and Well Log Analysts Inc

    EIN 731333833 · Headquarters: OKC, OK, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Society of Petrophysicists and Well Log Analysts Inc

    EIN 742521232 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  68. Society of Petrophysicists and Well Log Analysts Inc

    EIN 760265365 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Society of Petrophysicists and Well Log Analysts Inc

    EIN 814240067 · Headquarters: Austin, TX, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  70. Society of Petrophysicists and Well Log Analysts Inc

    EIN 824775325 · Headquarters: Bakersfield, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Society of Petrophysicists and Well Log Analysts Inc

    EIN 831956218 · Headquarters: Houston, TX, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  72. Society of Petrophysicists and Well Log Analysts Inc

    EIN 842663936 · Headquarters: Katy, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Society of Phi Zeta

    EIN 205479307 · Headquarters: Pomona, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Society of Phi Zeta

    EIN 223098507 · Headquarters: Davis, CA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  75. Society of Phi Zeta

    EIN 223099145 · Headquarters: West Lafayette, IN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Society of Phi Zeta

    EIN 223099761 · Headquarters: Knoxville, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Society of Phi Zeta

    EIN 223100748 · Headquarters: Pullman, WA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  78. Society of Phi Zeta

    EIN 223103617 · Headquarters: Madison, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. Society of Phi Zeta

    EIN 223103622 · Headquarters: North Grafton, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. Society of Phi Zeta

    EIN 301116118 · Headquarters: Cumberland Gap, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Society of Phi Zeta

    EIN 311262509 · Headquarters: Columbus, OH, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  82. Society of Phi Zeta

    EIN 376060780 · Headquarters: Urbana, IL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Society of Phi Zeta

    EIN 416054874 · Headquarters: St Paul, MN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Society of Phi Zeta

    EIN 426100377 · Headquarters: Ames, IA, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  85. Society of Phi Zeta

    EIN 481062988 · Headquarters: MANHATTAN, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Society of Phi Zeta

    EIN 581498920 · Headquarters: Athens, GA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  87. Society of Phi Zeta

    EIN 581918125 · Headquarters: Pembroke, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Society of Phi Zeta

    EIN 630961997 · Headquarters: AUBURN, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Society of Phi Zeta

    EIN 640769275 · Headquarters: Mississippi State, MS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Society of Phi Zeta

    EIN 736109389 · Headquarters: Stillwater, OK, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  91. Society of Phi Zeta

    EIN 746077589 · Headquarters: College Station, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Society of Phi Zeta National Headquarters

    EIN 166071496 · Headquarters: Auburn, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Society of Phi Zeta National Headquarters

    EIN 320574666 · Headquarters: GLendale, AZ, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  94. Society of Phi Zeta Tau Chapter

    EIN 721036313 · Headquarters: Baton Rouge, LA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  95. Society of Photo Technologists

    EIN 840592496 · Headquarters: Cheney, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Society of Physics Students

    EIN 364825788 · Headquarters: Statesboro, GA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Society of Pi Kappa Lambda

    EIN 232088117 · Headquarters: West Chester, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Society of Pi Kappa Lambda

    EIN 237076939 · Headquarters: Knoxville, TN, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  99. Society of Pi Kappa Lambda

    EIN 237111138 · Headquarters: Jefferson City, TN, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Society of Pi Kappa Lambda

    EIN 237111142 · Headquarters: Boone, NC, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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