Unknown & Unclassified nonprofits in Connecticut

Unknown & Unclassified nonprofits in Connecticut. Browse 7,402 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. Hamden Fish & Game Protective Association Inc

    EIN 066051304 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Hamden Land Conservation Trust Inc

    EIN 237153459 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Hamden Lodge #2224 of the BPOE

    EIN 060776113 · Headquarters: Hamden, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Hamden Police Benevolent Association Inc

    EIN 222516120 · Headquarters: HAMDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Hamden Professional Firefighters Local 2687

    EIN 061021428 · Headquarters: Hamden, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  6. Hamid Foundation Inc

    EIN 222580013 · Headquarters: Tolland, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  7. Hamilton Ave School Parent Teacher Assoc

    EIN 060994139 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  8. Hammonassett Fishing Association

    EIN 060380120 · Headquarters: MADISON, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  9. Hampstead Hill Club

    EIN 060621061 · Headquarters: Granby, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. Hampton Cemetery Assoc

    EIN 060740493 · Headquarters: Hampton, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  11. Hampton Foundation Inc

    EIN 853835422 · Headquarters: DANBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  12. Hampton Gazette

    EIN 060987479 · Headquarters: Hampton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Hand to Hand for Haiti

    EIN 061251435 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Hand Tools Institute Inc

    EIN 136158829 · Headquarters: Fairfield, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  15. Hands of Hope Outreach Ministries Inc

    EIN 862479789 · Headquarters: Stamford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Handweavers Guild of Connecticut Inc

    EIN 061008553 · Headquarters: Tolland, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Hannah Gray Development Corporation Dba Ella B Scantlebury

    EIN 223011882 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Hanover School Parent Teacher Organization

    EIN 222599420 · Headquarters: Meriden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Hans Christian Andersen Montessori School

    EIN 060855974 · Headquarters: Bolton, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  20. Hansel Foundation

    EIN 320475339 · Headquarters: East Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  21. Harmony Fellow Craft Club of New Canaan Inc

    EIN 066069251 · Headquarters: NEW CANAAN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. Harmony House Rabbit Sanctuary

    EIN 061780290 · Headquarters: Winsted, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  23. Harmony Lodge 42 Af & Am

    EIN 066107171 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  24. Harold Webster Smith Foundation Inc

    EIN 222947047 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  25. Harpoon Club Inc

    EIN 822700611 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  26. Harriet & M Fred Cartoun Foundation Inc

    EIN 136161735 · Headquarters: NEWTOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  27. Harriet Beecher Stowe Center Inc

    EIN 066042822 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  28. Hart United Inc

    EIN 061016076 · Headquarters: NORTH HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Harteveldt Foundation Inc

    EIN 131882108 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  30. Hartford Area Snet Employees Community Service Fund

    EIN 066179364 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Hartford Brainard Airport Association Inc

    EIN 880596496 · Headquarters: West Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  32. Hartford Canoe Club Inc

    EIN 060383295 · Headquarters: East Hartford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Hartford Chapt No 2115 Women of the Moose

    EIN 061514862 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  34. Hartford Chapter of Construction Specifications Institute Inc

    EIN 061414606 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Hartford Community Mental Health Center

    EIN 060994703 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Hartford Cooperative Extension Council Inc

    EIN 066039120 · Headquarters: Farmington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Hartford County Fire Emergency Plan Inc

    EIN 237348719 · Headquarters: PLAINVILLE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Hartford County Medical Association Inc

    EIN 060681545 · Headquarters: NORTH HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  39. Hartford County Medical Foundation Incorporated

    EIN 066097822 · Headquarters: North Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. Hartford Dental Society Inc

    EIN 066039487 · Headquarters: BLOOMFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  41. Hartford Electricians Joint Apprenticeship and Training Committee

    EIN 060854364 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Hartford Evergreen Lodge 88

    EIN 066037234 · Headquarters: SOUTH WINDSOR, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. Hartford Family Child Care Educators Community Inc

    EIN 932845617 · Headquarters: HARTFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Hartford Federation of Paraeducators Local 2221 Aft Aft-ct Afl-cio

    EIN 060956564 · Headquarters: ROCKY HILL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. Hartford Fraternal Order of Police Lodge 30

    EIN 010801518 · Headquarters: HARTFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Hartford Gay and Lesbian Health Collective Inc

    EIN 061172441 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Hartford Golf Club

    EIN 060383880 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  48. Hartford Golf Club Scholarship Foundation

    EIN 222966886 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  49. Hartford Gun Club Incorporated

    EIN 060383906 · Headquarters: East Granby, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  50. Hartford HealthCare Endowment LLC

    EIN 454181103 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  51. Hartford HealthCare Independence at Home Inc

    EIN 061161422 · Headquarters: Wethersfield, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  52. Hartford Interval House Inc

    EIN 060960005 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Hartford Jazz Society Inc

    EIN 066102327 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  54. Hartford Kashrut Commission Inc

    EIN 991071214 · Headquarters: West Hartford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. Hartford Liederkranz Inc

    EIN 060383961 · Headquarters: East Hampton, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  56. Hartford Lodge No 723 Loyal Order of Moose

    EIN 060407958 · Headquarters: Hartford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  57. Hartford Medical Society

    EIN 060384010 · Headquarters: LITCHFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. Hartford Municipal Employees Association

    EIN 061045708 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  59. Hartford Music Teachers Alliance

    EIN 472325522 · Headquarters: Farmington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Hartford Pak-k2 Lions Club

    EIN 884178410 · Headquarters: TERRYVILLE, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  61. Hartford Patrolmen's Benevolent Assoc Inc

    EIN 060604372 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  62. Hartford Police Union

    EIN 222549234 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  63. Hartford Public Library

    EIN 066026029 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Hartford Roman Catholic Diocesan Corporation

    EIN 060646669 · Headquarters: BLOOMFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-T

  65. Hartford Ski Club Inc

    EIN 066011490 · Headquarters: Coventry, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  66. Hartford Smith College Club

    EIN 066051959 · Headquarters: Willington, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  67. Hartford Tennis Club

    EIN 060691832 · Headquarters: West Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990

  68. Hartford User Group Exchange Inc

    EIN 222613745 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  69. Hartford Wolfpack Booster Club Inc

    EIN 061498024 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Hartford Yacht Club

    EIN 066003518 · Headquarters: South Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  71. Hartland Historical Society Inc

    EIN 222532376 · Headquarters: east hartland, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Harugari Singing Society Inc

    EIN 060385114 · Headquarters: Branford, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  73. Harvard Advocate Trustees Inc C/o Douglas Mcintyre

    EIN 046111721 · Headquarters: ROXBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  74. Harvard Club of Fairfield County Inc

    EIN 510200338 · Headquarters: Riverside, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Harvard Club of Southern Ct C/o Mark Goumas

    EIN 060983535 · Headquarters: OXFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Harvard Pilgrim Health Care of Connecticut Inc

    EIN 461681667 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990

  77. Harvard Radcliffe Club of Northern Ct

    EIN 061073317 · Headquarters: West Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Harwinton Historical Society Inc

    EIN 237207703 · Headquarters: Harwinton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Harwinton Land Conservation Trust Inc

    EIN 237298286 · Headquarters: Harwinton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Harwinton Library Friends Inc

    EIN 061164566 · Headquarters: Harwinton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Hasburg Chas-temple

    EIN 066428902 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  82. Haskins Laboratories Inc Retiree Veba Plan

    EIN 061439510 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  83. Hatfield Fund C/o Hatfield Insurance Agency

    EIN 066064456 · Headquarters: FAIRFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. Haul of Fame Inc

    EIN 061396176 · Headquarters: CANTERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  85. Hawks Nest Investment Corp

    EIN 066070399 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  86. Hawthorne Beach Maintenance Association

    EIN 061181989 · Headquarters: BYRAM, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  87. Hayes-velhage Unit 96

    EIN 832095077 · Headquarters: Newington, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  88. Hcmy Inc

    EIN 393903186 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Hd Holding Corporation

    EIN 222948683 · Headquarters: MANCHESTER, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  90. HD360 - Haiti Diaspora 360 Inc

    EIN 873001269 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  91. Hdosi Employees Activities Association

    EIN 061283644 · Headquarters: DANBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Healing Arts Institute Inc

    EIN 043165795 · Headquarters: TOLLAND, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. Healing Home Rescue

    EIN 334266323 · Headquarters: bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Healing Streams Ministry Inc

    EIN 465328113 · Headquarters: TRUMBULL, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Healing the Children Northeast Inc

    EIN 061172388 · Headquarters: NEW MILFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Health Information Alliance Inc

    EIN 842850813 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  97. Hearing Loss Association of America

    EIN 461125264 · Headquarters: NORWICH, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Heart of America Carnival Glass Assn Inc

    EIN 431155511 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Heartland Mission Inc

    EIN 383957333 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  100. Heat & Frost Insulators Local No 33 Health Fund

    EIN 061078051 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

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