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. Sleepy Hollow Recreation Association

    EIN 540656226 · Headquarters: FALLS CHURCH, VA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Sleepy Hollow Recreational Association

    EIN 941348860 · Headquarters: Orinda, CA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  3. Sleepy Hollow Water Company Inc

    EIN 510178292 · Headquarters: Horace, ND, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  4. Sleepy Valley Water Co Inc

    EIN 952490616 · Headquarters: CANYON COUNTRY, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  5. Slew Crew Ranch Rodeo

    EIN 862100475 · Headquarters: WILLOW LAKE, SD, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  6. Slexc Boys Boosters

    EIN 813094344 · Headquarters: SOUTH LYON, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Slg Cohen Foundation Inc

    EIN 363639861 · Headquarters: PEORIA, IL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  8. Slga

    EIN 815446773 · Headquarters: Meridian, ID, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Slhs Girls Basketball

    EIN 800510160 · Headquarters: SPANAWAY, WA, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  10. Slhs Speech and Debate Booster Club

    EIN 271862871 · Headquarters: Katy, TX, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-PF

  11. Slibco (Scr Lack Ind Bldg Co)

    EIN 236298311 · Headquarters: SCRANTON, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Slibco Utilities

    EIN 232815948 · Headquarters: SCRANTON, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Slice of Heaven Educational Farm

    EIN 832366220 · Headquarters: HOLLAND, TX, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  14. Slice of Life Florida Inc

    EIN 813731556 · Headquarters: MADEIRA BEACH, FL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  15. Slick Fork 4-H Club

    EIN 383924081 · Headquarters: SANDPOINT, ID, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  16. Slick Memorial Fund

    EIN 256328609 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  17. Slickville a L Aux - Unit 18

    EIN 300273583 · Headquarters: Slickville, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Slickville Sportmens Club

    EIN 250941336 · Headquarters: Slickville, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Slidell Chapter 1564 Women of the Moose

    EIN 237423823 · Headquarters: Slidell, LA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Slidell Lodge No 2038 Loyal Order of Moose

    EIN 720645022 · Headquarters: Slidell, LA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Slidell Memorial Hospital

    EIN 726014895 · Headquarters: SLIDELL, LA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-T

  22. Slidell Newcomers Club Inc

    EIN 581889392 · Headquarters: Slidell, LA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Slidell Northshore Rotary Club

    EIN 721105444 · Headquarters: Slidell, LA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  24. Slidell Water Supply Corporation

    EIN 756247021 · Headquarters: SLIDELL, TX, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Slidell Womens Civic Club

    EIN 412143061 · Headquarters: Slidell, LA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. Slidell Youth Soccer Club Inc

    EIN 720874003 · Headquarters: Slidell, LA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Slidell Youth Sports

    EIN 993621574 · Headquarters: SANGER, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  28. Sliders Baseball Club

    EIN 611565647 · Headquarters: Montgomery, AL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  29. Sliding Dutchmen Snowmobile Assocation Inc

    EIN 800146757 · Headquarters: Kutztown, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Sligo Creek Elementary School Pta

    EIN 522139334 · Headquarters: SILVER SPRING, MD, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Slim Baker Foundation for Outdoor Education Inc

    EIN 026308497 · Headquarters: Bristol, NH, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  32. Slims Journey

    EIN 471272547 · Headquarters: Warrenton, MO, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  33. Slinger Economic Development Corp

    EIN 391685460 · Headquarters: Slinger, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  34. Slinger Education Association

    EIN 237088255 · Headquarters: MADISON, WI, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Slinger Kiwanis Club

    EIN 834107072 · Headquarters: Slinger, WI, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. Slingerland Beth & John Charitable Trt

    EIN 916355975 · Headquarters: TACOMA, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  37. Slingerland Literacy Institute

    EIN 911189697 · Headquarters: BELLEVUE, WA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Slipher Vesto M Tw Xxxxx0003

    EIN 866065266 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  39. Slippery Elm Literary Journal

    EIN 462129243 · Headquarters: Findlay, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Slippery Gulch Association Inc

    EIN 826009031 · Headquarters: Wallace, ID, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Slippery Rock Area Education Association

    EIN 271736926 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Slippery Rock Area Educational Service Personnel Association

    EIN 251681404 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Slippery Rock Park Civic Association

    EIN 472345914 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Slippery Rock Reenactment Association

    EIN 251286315 · Headquarters: Pittsburgh, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Slippery Rock Student Government Association Inc

    EIN 256010954 · Headquarters: Slippery Rock, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Slippery Rock Track and Field Boosters

    EIN 473152865 · Headquarters: Slippery Rock, PA, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  47. Slippery Saddles 4-H Club

    EIN 352438740 · Headquarters: Crown Point, IN, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  48. Slipping Rib Syndrome Association

    EIN 994051524 · Headquarters: Dothan, AL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Slo County Citizens for Good Govern

    EIN 873976842 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. SLO Credit Union

    EIN 956062634 · Headquarters: San Luis Obispo, CA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Slo Flyers Inc

    EIN 770321341 · Headquarters: SAN LUIS OBISPO, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Slo Girls Softball Association

    EIN 770178713 · Headquarters: SN LUIS OBISP, CA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  53. Slo Grown Kids Inc

    EIN 264488059 · Headquarters: Los Osos, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Slo Riders

    EIN 770416200 · Headquarters: SAN LUIS OBISPO, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Slo Seed Ventures Inc

    EIN 462806032 · Headquarters: SAN LUIS OBISPO, CA, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  56. Slo Skiers Inc

    EIN 953660922 · Headquarters: SAN LUIS OBISPO, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Sloan Selective Services

    EIN 861839083 · Headquarters: Sacamento, CA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Sloane Ulric Charitable

    EIN 316019506 · Headquarters: PITTSBURGH, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  59. Sloans Lake Foundation

    EIN 335038420 · Headquarters: Denver, CO, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Slobodien Foundation

    EIN 226034593 · Headquarters: FAIRFIELD, NJ, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  61. Slocum Garden Club

    EIN 364642343 · Headquarters: Mcdermott, OH, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  62. Slocum Lunz Foundation

    EIN 570371213 · Headquarters: Charleston, SC, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  63. Slocum Water Supply Corporation

    EIN 751375746 · Headquarters: ELKHART, TX, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Sloman Foundation Inc

    EIN 237011941 · Headquarters: SOMERS, NY, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  65. Sloop Tavern Yacht Club

    EIN 911052130 · Headquarters: Seattle, WA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  66. Slope Electric Cooperative Inc

    EIN 450217360 · Headquarters: NEW ENGLAND, ND, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  67. Sloper William T

    EIN 066024334 · Headquarters: DALLAS, TX, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  68. Slopes & Trails Inc

    EIN 931032978 · Headquarters: Medford, OR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Slopes Outside Inc

    EIN 934243505 · Headquarters: Oakland, CA, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  70. Sloppy Seconds Hunting Club

    EIN 862466266 · Headquarters: North Little Rock, AR, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Slotnick Foundation C/o Wells Fargo Ifs Fiduciary Tax Svc

    EIN 596883622 · Headquarters: SAINT LOUIS, MO, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  72. Sloughhouse Benchrest Shooters Inc

    EIN 263798185 · Headquarters: GALT, CA, US · Unknown & Unclassified · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  73. Slova Gisner Residuary Trust

    EIN 306541203 · Headquarters: PENNINGTON, NJ, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  74. Slova Gisner Residuary Trust

    EIN 306541204 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  75. Slova Gisner Residuary Trust

    EIN 306541205 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-PF

  76. Slova Gisner Residuary Trust

    EIN 306541206 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  77. Slova Gisner Residuary Trust

    EIN 306541207 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  78. Slova Gisner Residuary Trust

    EIN 306541208 · Headquarters: NEW YORK, NY, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-PF

  79. Slova Gisner Residuary Trust

    EIN 306541209 · Headquarters: PENNINGTON, NJ, USA · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-PF

  80. Slovak Alliance of Greater Bridgeport Inc

    EIN 237445213 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  81. Slovak American Citizens Club

    EIN 250340815 · Headquarters: Northern Cambria, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  82. Slovak American Citizens Club

    EIN 250801250 · Headquarters: MCKEES ROCKS, PA, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. Slovak American Citizens Mutal Benefit Club

    EIN 250915509 · Headquarters: WASHINGTON, PA, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  84. Slovak American Club

    EIN 231095410 · Headquarters: PHOENIXVILLE, PA, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  85. Slovak American Sokol Krivan

    EIN 366084811 · Headquarters: CHICAGO, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  86. Slovak Athletic Association

    EIN 363016072 · Headquarters: WESTCHESTER, IL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  87. Slovak Catholic Sokol

    EIN 221288010 · Headquarters: PASSAIC, NJ, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  88. Slovak Catholic Sokol

    EIN 222576701 · Headquarters: Clifton, NJ, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  89. Slovak Catholic Sokol

    EIN 237522608 · Headquarters: Bridgeport, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Slovak Catholic Sokol

    EIN 237522688 · Headquarters: Bethlehem, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Slovak Catholic Sokol

    EIN 237522795 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Slovak Catholic Sokol

    EIN 237522845 · Headquarters: Palmerton, PA, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  93. Slovak Catholic Sokol

    EIN 237522849 · Headquarters: Clinton Twsp, MI, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Slovak Catholic Sokol

    EIN 237522854 · Headquarters: Passaic, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Slovak Catholic Sokol

    EIN 237522869 · Headquarters: Passaic, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Slovak Catholic Sokol

    EIN 237522877 · Headquarters: West Deptford, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Slovak Catholic Sokol

    EIN 237522935 · Headquarters: Belle Vernon, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Slovak Catholic Sokol

    EIN 237522942 · Headquarters: Fallston, PA, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Slovak Catholic Sokol

    EIN 237522947 · Headquarters: Wadsworth, OH, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  100. Slovak Catholic Sokol

    EIN 237522951 · Headquarters: Waldwick, NJ, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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