Nonprofits in Connecticut

Nonprofits in Connecticut. Browse 26,993 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. Connecticut Humane Society

    EIN 060667605 · Headquarters: NEWINGTON, CT, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Connecticut Humane Society Memorial

    EIN 061554779 · Headquarters: NEWINGTON, CT, USA · Animal Related · Latest available filing year: 2010 · Primary form: IRS Form 990

  3. Connecticut Humanities Council Inc

    EIN 060902244 · Headquarters: MIDDLETOWN, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Connecticut Hunting Education Corp

    EIN 822519912 · Headquarters: BURLINGTON, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Connecticut Hurricanes Drum & Bugle Corps Inc

    EIN 061273256 · Headquarters: SEYMOUR, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Connecticut Ib Academy Parents Advisory Council

    EIN 852678958 · Headquarters: East Hartford, CT, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  7. Connecticut Ics Youth Bowling League

    EIN 931363756 · Headquarters: Vernon, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Connecticut Immigrant & Refugee Coalition

    EIN 061623555 · Headquarters: WEST HARTFORD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Connecticut Immigrant Center Inc

    EIN 822831160 · Headquarters: DANBURY, CT, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  10. Connecticut Independent Physician Practice Association Inc

    EIN 992585136 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  11. Connecticut Independent Police Union

    EIN 061164900 · Headquarters: NAUGATUCK, CT, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  12. Connecticut Independent Police Union

    EIN 222575456 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Connecticut Independent Utility Workers Union Local 12924

    EIN 061056185 · Headquarters: EAST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Connecticut Industrial Ski Council

    EIN 463271403 · Headquarters: West Hartford, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Connecticut Infectious Disease Society Inc

    EIN 208857357 · Headquarters: North Haven, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  16. Connecticut Insitute for Aging & Cancer Inc

    EIN 061438436 · Headquarters: Milford, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  17. Connecticut Institute for Comm

    EIN 223320221 · Headquarters: HARTFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990

  18. Connecticut Institute For Communities, Inc.

    EIN 912187143 · Headquarters: DANBURY, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Connecticut Institute for Human Health Inc

    EIN 030563882 · Headquarters: Woodbridge, CT, US · Medical Research · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  20. Connecticut Institute for Refugees and Immigrants Inc

    EIN 060669118 · Headquarters: BRIDGEPORT, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  21. Connecticut Institute for Social Entrepreneurship

    EIN 861805538 · Headquarters: Hartford, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Connecticut Institute Foundation Inc

    EIN 833960130 · Headquarters: Danbury, CT, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Connecticut Institute of Transportation Engineers

    EIN 842127564 · Headquarters: East Hartford, CT, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Connecticut Interfaith Housing & Human Services Corporation

    EIN 061072219 · Headquarters: North Haven, CT, US · Housing & Shelter · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  25. Connecticut International Trade Association Inc

    EIN 061235856 · Headquarters: Windsor Locks, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  26. Connecticut Internet Service Providers Association Inc

    EIN 061634587 · Headquarters: Hartford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  27. Connecticut Interscholastic Wrestling Officials Association

    EIN 931345265 · Headquarters: Griswold, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Connecticut Interventional Radiology Educational Foundation

    EIN 203742051 · Headquarters: East Hartford, CT, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  29. Connecticut Invention Convention

    EIN 223173317 · Headquarters: HARTFORD, CT, USA · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Connecticut Irish Fund Inc

    EIN 061335438 · Headquarters: Fairfield, CT, US · Education · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  31. Connecticut Ironworkers Employers Assoc Inc

    EIN 061170317 · Headquarters: WETHERSFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  32. Connecticut Irrigation Contractors Association

    EIN 223042114 · Headquarters: EAST GRANBY, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  33. Connecticut Jaycee International Senate Inc

    EIN 223072781 · Headquarters: Niantic, CT, US · Education · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  34. Connecticut Jaycees Inc

    EIN 060842531 · Headquarters: Meriden, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  35. Connecticut Jaycees Inc

    EIN 060900477 · Headquarters: Milford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  36. Connecticut Jaycees Inc

    EIN 061338877 · Headquarters: South Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  37. Connecticut Jaycees Inc

    EIN 237406069 · Headquarters: Trumbull, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  38. Connecticut Jaycees Inc

    EIN 237406070 · Headquarters: Southington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Connecticut Jeep Invasion Foundatio N Inc

    EIN 412660391 · Headquarters: Moosup, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Connecticut Jewelers Association Inc

    EIN 237121438 · Headquarters: New Haven, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  41. Connecticut Jr Huskies

    EIN 141956699 · Headquarters: VERNON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Connecticut Judges Association Inc

    EIN 463129790 · Headquarters: New Haven, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Connecticut Judicial Marshal Association Ibpo Local 731 Inc

    EIN 933438614 · Headquarters: Cromwell, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Connecticut Junion Golf Association Inc

    EIN 061496273 · Headquarters: Bethel, CT, US · Recreation & Sports · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  45. Connecticut Junior Republic Association Incorporated

    EIN 060646590 · Headquarters: LITCHFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Connecticut Junior Soccer Association Inc

    EIN 061021989 · Headquarters: FARMINGTON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Connecticut Junior Women Inc

    EIN 037036035 · Headquarters: Stratford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  48. Connecticut Junior Women Inc

    EIN 041007904 · Headquarters: Monroe, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Connecticut Junior Women Inc

    EIN 060933468 · Headquarters: Milford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  50. Connecticut Junior Women Inc

    EIN 060951304 · Headquarters: Litchfield, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  51. Connecticut Junior Women Inc

    EIN 061010762 · Headquarters: Marlborough, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  52. Connecticut Junior Women Inc

    EIN 061101144 · Headquarters: Old Lyme, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  53. Connecticut Junior Women Inc

    EIN 061196624 · Headquarters: ORANGE, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Connecticut Junior Women Inc

    EIN 061267152 · Headquarters: Middlebury, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  55. Connecticut Junior Women Inc

    EIN 061267212 · Headquarters: Middlefield, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  56. Connecticut Junior Women Inc

    EIN 061273957 · Headquarters: SOUTH WINDSOR, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Connecticut Junior Women Inc

    EIN 061327816 · Headquarters: Bethlehem, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  58. Connecticut Junior Women Inc

    EIN 061393135 · Headquarters: SIMSBURY, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Connecticut Junior Women Inc

    EIN 061393138 · Headquarters: Newtown, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  60. Connecticut Junior Women Inc

    EIN 061393146 · Headquarters: WALLINGFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. Connecticut Junior Women Inc

    EIN 061393148 · Headquarters: Woodbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Connecticut Junior Women Inc

    EIN 061393418 · Headquarters: HEBRON, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  63. Connecticut Junior Women Inc

    EIN 061393422 · Headquarters: Haddam, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  64. Connecticut Junior Women Inc

    EIN 066061155 · Headquarters: Vernon, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  65. Connecticut Junior Women Inc

    EIN 066074900 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Connecticut Junior Women Inc

    EIN 066083900 · Headquarters: Fairfield, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  67. Connecticut Junior Women Inc

    EIN 066085216 · Headquarters: Tolland, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  68. Connecticut Junior Women Inc

    EIN 066089843 · Headquarters: Trumbull, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Connecticut Junior Women Inc

    EIN 066091280 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Connecticut Junior Women Inc

    EIN 066108869 · Headquarters: Beacon Falls, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  71. Connecticut Junior Women Inc

    EIN 237040692 · Headquarters: Kensington, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  72. Connecticut Junior Women Inc

    EIN 237041985 · Headquarters: Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Connecticut Junior Women Inc

    EIN 237129592 · Headquarters: Ellington, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  74. Connecticut Junior Women Inc

    EIN 237132179 · Headquarters: New Haven, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  75. Connecticut Junior Women Inc

    EIN 237133152 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Connecticut Junior Women Inc

    EIN 237353896 · Headquarters: DURHAM, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  77. Connecticut Junior Women Inc

    EIN 237396908 · Headquarters: Clinton, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  78. Connecticut Junior Women Inc

    EIN 521487821 · Headquarters: Monroe, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Connecticut Karen Community Association Inc

    EIN 454943721 · Headquarters: Hartford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  80. Connecticut Kidney Transplantation Research and Organ Donor Awareness

    EIN 510192398 · Headquarters: Windsor, CT, US · Medical Research · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  81. Connecticut Kids Dance Inc

    EIN 205961028 · Headquarters: Milford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  82. Connecticut Kids Play Chess Inc

    EIN 455290727 · Headquarters: Sandy Hook, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Connecticut Korean War Veterans Memorial Foundation

    EIN 263807803 · Headquarters: South Windsor, CT, US · Public & Societal Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  84. Connecticut Laborers' District Council

    EIN 066084948 · Headquarters: POMFRET, CT, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990

  85. Connecticut Laborers' District Council Unified Trust

    EIN 834679087 · Headquarters: WEST HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Connecticut Laborers' Health Fund

    EIN 060681161 · Headquarters: WEST HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  87. Connecticut Laborers' Legal Services Fund

    EIN 060978828 · Headquarters: ROCKY HILL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. Connecticut Labrador Rescue Incorporated

    EIN 270745106 · Headquarters: HIGGANUM, CT, US · Animal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  89. Connecticut Lacrosse Foundation

    EIN 813918770 · Headquarters: NIANTIC, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Connecticut Lady Knights Inc

    EIN 461100976 · Headquarters: West Hartford, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Connecticut Land Conservation Council Inc

    EIN 822683386 · Headquarters: Middletown, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Connecticut Land Foundation Inc

    EIN 223101009 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Connecticut Law Enforcement Officers Memorial Run Inc

    EIN 814777130 · Headquarters: Hartford, CT, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Connecticut League for Nursing Inc

    EIN 060760307 · Headquarters: NORTH HAVEN, CT, USA · Health Care · Latest available filing year: 2021 · Primary form: IRS Form 990

  95. Connecticut League of History Organizations

    EIN 066108671 · Headquarters: NEW BRITAIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  96. Connecticut League of Victims Inc

    EIN 061190378 · Headquarters: Wilton, CT, US · Recreation & Sports · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  97. Connecticut Legal Rights Project Inc

    EIN 223069277 · Headquarters: MIDDLETOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Connecticut Legal Services Inc

    EIN 060955461 · Headquarters: MIDDLETOWN, CT, USA · Crime & Legal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. Connecticut Library Consortium Inc

    EIN 060972533 · Headquarters: Middletown, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Connecticut Licensed Practical Nurses Association Inc

    EIN 060694426 · Headquarters: WINDSOR, CT, US · Health Care · Latest available filing year: 2013 · Primary form: IRS Form 990-N

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