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. Historic Water Tower Neighborhood Inc

    EIN 510183391 · Headquarters: MILWAUKEE, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. Historic Watertown Inc

    EIN 621483409 · Headquarters: WATERTOWN, TN, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Historic Waxahachie Inc

    EIN 751634835 · Headquarters: WAXAHACHIE, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  4. Historic West Grace Street Association

    EIN 852019527 · Headquarters: Richmond, VA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Historic West Harwich Schoolhouse

    EIN 853683374 · Headquarters: west harwich, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  6. Historic Westside Gardens

    EIN 271059674 · Headquarters: Atlanta, GA, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  7. Historic Winslow House Association Inc

    EIN 510147206 · Headquarters: Marshfield, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Historic Winwood Inc

    EIN 825483821 · Headquarters: Altamonte Springs, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  9. Historic Woodruff Place Foundation Inc

    EIN 351776895 · Headquarters: INDIANAPOLIS, IN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  10. Historic Wrightsville Inc

    EIN 232144154 · Headquarters: Wrightsville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. Historical & Community Center of Raymondville

    EIN 741607867 · Headquarters: Port Isabel, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Historical and Cultural Activities Center of Houston County Texas Inc

    EIN 751639310 · Headquarters: Crockett, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Historical and Genealogical Society

    EIN 251355409 · Headquarters: INDIANA, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Historical Association of Central Louisiana

    EIN 720807944 · Headquarters: Alexandria, LA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Historical Association of Greater Cape Girardeau Inc

    EIN 237275986 · Headquarters: Cape Girardeau, MO, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  16. Historical Association of Lewiston

    EIN 237260141 · Headquarters: LEWISTON, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  17. Historical Association of Sout

    EIN 161066226 · Headquarters: ADAMS, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  18. Historical Association of Southern Florida Endowment Fund

    EIN 596868749 · Headquarters: MIAMI, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Historical Association of Southern Florida Inc

    EIN 590968005 · Headquarters: MIAMI, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Historical Automobile Club of Oregon

    EIN 237390074 · Headquarters: Clackamas, OR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Historical Book Club of Nc Inc

    EIN 566052990 · Headquarters: ASHEBORO, NC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  22. Historical Brothers & Sisters of Benevolence

    EIN 990386089 · Headquarters: Eatonton, GA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. Historical Car Club Association of Olympia

    EIN 911645991 · Headquarters: OLYMPIA, WA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Historical Collections of Grundy County

    EIN 421076522 · Headquarters: Morrison, IA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Historical Confederation of Kentucky Inc

    EIN 311027590 · Headquarters: BOWLING GREEN, KY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Historical Construction

    EIN 341577483 · Headquarters: BOWLING GREEN, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Historical Education Institute

    EIN 853716620 · Headquarters: Madison, AL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Historical Engine Society

    EIN 341184463 · Headquarters: Chardon, OH, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Historical European Martial Arts

    EIN 473506611 · Headquarters: Daytona Beach, FL, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  30. Historical Foundation for Southeast New Mexico

    EIN 850305615 · Headquarters: ROSWELL, NM, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  31. Historical Fourth Us Infantry Assoc Nw

    EIN 272588527 · Headquarters: DuPont, WA, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  32. Historical Glass Museum Foundation

    EIN 953089241 · Headquarters: Redlands, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  33. Historical Guide Association of California

    EIN 770058631 · Headquarters: SAN SIMEON, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Historical Halifax Restoration Assn

    EIN 566060980 · Headquarters: HALIFAX, NC, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Historical Interpreters Inc

    EIN 521440324 · Headquarters: Woodbine, MD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Historical Jonesboro Clayton County

    EIN 237000397 · Headquarters: JONESBORO, GA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  37. Historical Keyboard Society of North America Incorporated

    EIN 561284204 · Headquarters: Selinsgrove, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Historical Military Impressions

    EIN 232174988 · Headquarters: Malvern, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Historical Miniatures Gaming Society In

    EIN 521463458 · Headquarters: Bel Air, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Historical Museum of Anthony Inc

    EIN 480869231 · Headquarters: Anthony, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Historical Museum of Barbed Wire

    EIN 752344729 · Headquarters: MCLEAN, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Historical Museum of Big Horn County

    EIN 810431584 · Headquarters: Hardin, MT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  43. Historical Natural History & Library Soc of Natick Inc

    EIN 042617537 · Headquarters: NATICK, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Historical Old Salem Inc

    EIN 521078117 · Headquarters: CATONSVILLE, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Historical Piano Concerts Inc

    EIN 042932853 · Headquarters: Ashburnham, MA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  46. Historical Preservation Inc

    EIN 237023817 · Headquarters: OKLAHOMA CITY, OK, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  47. Historical Preservation of Glen Alpine Springs Inc

    EIN 680082431 · Headquarters: Placerville, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Historical Preservation Society Inc

    EIN 823434335 · Headquarters: Pensacola, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  49. Historical Preservation Society of the Upper Keys Inc

    EIN 592017619 · Headquarters: ISLAMORADA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Historical Preservation Society of Upper Township New Jersey

    EIN 222271164 · Headquarters: MARMORA, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Historical Research Foundation

    EIN 237018408 · Headquarters: Pacific Palisades, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  52. Historical Sites Society of Arcata Incorporated

    EIN 237301654 · Headquarters: Arcata, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Historical Soc Mllrsbrg & U P

    EIN 232166999 · Headquarters: MILLERSBURG, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  54. Historical Society Cranford

    EIN 226032941 · Headquarters: cranford, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Historical Society Fort Leavenworth Kansas

    EIN 486125055 · Headquarters: FORT LEAVENWORTH, KS, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Historical Society Harford Cou

    EIN 526054081 · Headquarters: Bel Air, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Historical Society Inc Clay County

    EIN 237024022 · Headquarters: Vermillion, SD, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Historical Society of Amherst N H

    EIN 026015341 · Headquarters: Amherst, NH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Historical Society of Baldwin

    EIN 391446298 · Headquarters: Baldwin, WI, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  60. Historical Society of Bensalem Twp

    EIN 232112430 · Headquarters: Bensalem, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Historical Society of Boonton Township Inc

    EIN 237437532 · Headquarters: BOONTON, NJ, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Historical Society of Brookfield Vermont Inc

    EIN 036011275 · Headquarters: Brookfield, VT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  63. Historical Society of Cecil County Inc

    EIN 237075378 · Headquarters: ELKTON, MD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Historical Society of Centinela Valley

    EIN 956100349 · Headquarters: Los Angeles, CA, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  65. Historical Society of Charles County Inc

    EIN 237043444 · Headquarters: La Plata, MD, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Historical Society of Chattooga County Inc

    EIN 581792129 · Headquarters: Summerville, GA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Historical Society of Claycomo Missouri

    EIN 813805109 · Headquarters: CLAYCOMO, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Historical Society of Columbiana and Fairfield Township Inc

    EIN 346542645 · Headquarters: Columbiana, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Historical Society of Crawford County

    EIN 486131663 · Headquarters: PITTSBURG, KS, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Historical Society of Dayton Valley

    EIN 364585700 · Headquarters: Dayton, NV, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Historical Society of Decatur County

    EIN 356257610 · Headquarters: GREENSBURG, IN, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  72. Historical Society of Dunkirk

    EIN 166183365 · Headquarters: DUNKIRK, NY, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  73. Historical Society of East Hartford Incorporated

    EIN 237079151 · Headquarters: East Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  74. Historical Society of East Liberty County

    EIN 760201805 · Headquarters: HULL, TX, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Historical Society of Easton Inc

    EIN 060850150 · Headquarters: Easton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. Historical Society of Esquatak

    EIN 237202436 · Headquarters: EAST SCHODACK, NY, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Historical Society of Estell Manor New Jersey Inc

    EIN 222527187 · Headquarters: Estell Manor, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Historical Society of Federal Way

    EIN 911427077 · Headquarters: FEDERAL WAY, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. Historical Society of Forest Park

    EIN 510175463 · Headquarters: Forest Park, IL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  80. Historical Society of Fort Washington Penna

    EIN 237454693 · Headquarters: Gwynedd, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Historical Society of Frankford

    EIN 236296560 · Headquarters: Philadelphia, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Historical Society of Garden County

    EIN 237181366 · Headquarters: Oshkosh, NE, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Historical Society of Grand Rapids Ohio

    EIN 341203756 · Headquarters: Grand Rapids, OH, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Historical Society of Greater Lake Placid Inc

    EIN 592277779 · Headquarters: Lake Placid, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  85. Historical Society of Greater Lansing

    EIN 386092491 · Headquarters: Lansing, MI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Historical Society of Greenfield

    EIN 046041992 · Headquarters: GREENFIELD, MA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Historical Society of Hammonton New Jersey

    EIN 226100526 · Headquarters: HAMMONTON, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Historical Society of Hilltown Township

    EIN 231981026 · Headquarters: Hilltown, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Historical Society of Hopkins Co Inc

    EIN 237428486 · Headquarters: MADISONVILLE, KY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. Historical Society of La Verne

    EIN 237292237 · Headquarters: La Verne, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Historical Society of Litchfield

    EIN 010341794 · Headquarters: Litchfield, ME, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Historical Society of Long Beach

    EIN 956111591 · Headquarters: LONG BEACH, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  93. Historical Society of Lower Township

    EIN 472810130 · Headquarters: Cape May, NJ, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  94. Historical Society of Maries County

    EIN 431440946 · Headquarters: VIENNA, MO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Historical Society of Marlboro Inc

    EIN 237229130 · Headquarters: MARLBORO, VT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Historical Society of Martin County Inc

    EIN 590913326 · Headquarters: STUART, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. Historical Society of Middletown & Wallkill

    EIN 146017096 · Headquarters: MIDDLETOWN, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  98. Historical Society of Moorestown

    EIN 221898269 · Headquarters: MOORESTOWN, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Historical Society of Mount Pleasant Ohio Inc

    EIN 346544979 · Headquarters: Mt Pleasant, OH, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  100. Historical Society of New Mexico

    EIN 856011525 · Headquarters: SANTA FE, NM, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

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