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. Association for Bridge Construction and Design-new England Region Inc

    EIN 061620278 · Headquarters: Westport, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  2. Association for Community Organization and Resource Development Inc

    EIN 061157007 · Headquarters: WALLINGFORD, CT, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Association for Fire & Police Cadets Inc

    EIN 455631337 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  4. Association for Long-term Care Financial Managers Inc

    EIN 061363158 · Headquarters: Barkhamsted, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  5. Association for Persons In Supported Employment

    EIN 061635385 · Headquarters: Bethel, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Association for Research Into Crimes Against Art Incorporated

    EIN 261116988 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  7. Association for Symbolic Logic

    EIN 050309724 · Headquarters: STORRS, CT, USA · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990

  8. Association for the Study of Connecticut History Inc

    EIN 061052241 · Headquarters: New London, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Association For Women In Psychology C/o Kathy McCloskey

    EIN 133390194 · Headquarters: Weatogue, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  10. Association for Women in Science Inc

    EIN 061461324 · Headquarters: Niantic, CT, US · Social Science · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  11. Association of Alumni of the Office of the General Counsel of the Navy

    EIN 521736659 · Headquarters: West Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Association of Anglican Musicians

    EIN 382784057 · Headquarters: Norwalk, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  13. Association of Area Business Publishers Inc

    EIN 311034532 · Headquarters: NORWALK, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  14. Association of Black Sports Officials

    EIN 834427404 · Headquarters: Bloomfield, CT, US · Human Services · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  15. Association of Chinese Students and Scholars at Yale Inc

    EIN 331710878 · Headquarters: New Haven, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Association of Civilian Technicians Inc

    EIN 460511258 · Headquarters: Groton, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Association of College and University Policy Administrators

    EIN 472209487 · Headquarters: Cromwell, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  18. Association of Commuter Rail Employees Local Division 166

    EIN 061656927 · Headquarters: milford, CT, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Association of Connecticut Assistant Attorney Generals Local 6574

    EIN 833845561 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  20. Association of Connecticut Career Schools Inc

    EIN 222747375 · Headquarters: west hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  21. Association of Connecticut Choruses Inc

    EIN 222717624 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  22. Association of Connecticut Fair Inc

    EIN 060973371 · Headquarters: Berlin, CT, USA · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. Association of Connecticut Library Boards Inc

    EIN 061101758 · Headquarters: Ellington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Association of Contingency Planners

    EIN 203845059 · Headquarters: Berlin, CT, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  25. Association of Corporate Art Curators

    EIN 363130715 · Headquarters: RIDGEFIELD, CT, US · Arts, Culture & Humanities · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  26. Association of Council 4 Employees

    EIN 061521594 · Headquarters: New Britain, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Association of Court Security Officers-Connecticut

    EIN 113492739 · Headquarters: NEW HAVEN, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Association of Criminal Justice Programs Incorporated

    EIN 274416525 · Headquarters: New Britain, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  29. Association of Divorce Financial Planner C/o L Vasileff President

    EIN 113420188 · Headquarters: GREENWICH, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. Association of Dupont Retirees Inc Co Edward Stone Law Pc

    EIN 834581999 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Association of Educational Service Agencies Foundation

    EIN 311699547 · Headquarters: CHESHIRE, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. Association of Government Accountants

    EIN 061466277 · Headquarters: Waterbury, CT, US · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  33. Association of Independent School Admission Professionals

    EIN 571218279 · Headquarters: Madison, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  34. Association of Korean Neuroscientists

    EIN 872126564 · Headquarters: MILFORD, CT, US · Science & Technology · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  35. Association of Legal Administrators Nutmeg Chapter

    EIN 061223970 · Headquarters: Simsbury, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  36. Association of Madison Administrators

    EIN 010824692 · Headquarters: Madison, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Association of Managerial Employees in the Connecticut State Service

    EIN 061083304 · Headquarters: Hartford, CT, US · Employment · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  38. Association of Native Americans Mid-hudson Region Ltd

    EIN 161021872 · Headquarters: Stratford, CT, US · Human Services · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  39. Association of Notre Dame Clubs Inc - Fairfield County

    EIN 311075384 · Headquarters: NORWALK, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Association of Notre Dame Clubs Inc - Greater Hartford

    EIN 311075379 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  41. Association of Notre Dame Clubs Inc - New Haven

    EIN 311375131 · Headquarters: Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  42. Association of Notre Dame Clubs Inc - Rhode Island & SE Massachusetts

    EIN 311075493 · Headquarters: Mystic, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Association of Notre Dame Clubs Inc - Southeastern Connecticut

    EIN 311375132 · Headquarters: Ivoryton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Association of Operating Room Nurses Inc

    EIN 061163168 · Headquarters: DANBURY, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  45. Association of Operating Room Nurses Inc

    EIN 550865049 · Headquarters: windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  46. Association of Operating Room Nurses Inc

    EIN 742653829 · Headquarters: West Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Association of Operating Room Nurses Inc

    EIN 742715141 · Headquarters: Beacon Falls, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  48. Association of Out Surgeons and Allies

    EIN 883678904 · Headquarters: West Hartford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  49. Association of Peruvian American Professionals Inc

    EIN 562313887 · Headquarters: Hartford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  50. Association of Postgraduate Physician Assistant Programs Inc

    EIN 320189924 · Headquarters: EASTON, CT, USA · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  51. Association of Religious Communities Inc

    EIN 060942514 · Headquarters: Danbury, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  52. Association of Retired Educators of Fairfield

    EIN 061619199 · Headquarters: FAIRFIELD, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  53. Association of Retired Teachers of Ct Inc

    EIN 060857996 · Headquarters: MANCHESTER, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Association of School Business Officials International

    EIN 222989991 · Headquarters: Niantic, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Association of School Nurses of Connecticut Inc

    EIN 222559695 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  56. Association of Senegalese in Connecticut

    EIN 842410471 · Headquarters: Norwich, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  57. Association of Stained Glass Lamp Artisits Northeast Inc

    EIN 061373007 · Headquarters: BURLINGTON, CT, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  58. Association of Technical & Supervisory Professionals

    EIN 237379561 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  59. Association of the Free Library and Reading Room of Rowayton Inc

    EIN 060736950 · Headquarters: ROWAYTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. Association of the Woodbury Fire Department Inc

    EIN 222611577 · Headquarters: WOODBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  61. Association of Traditional Hooking Artists

    EIN 201146649 · Headquarters: Unionville, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Association of Traditional Hooking Artists

    EIN 201236407 · Headquarters: NORWALK, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Association of Traditional Hooking Artists

    EIN 204888253 · Headquarters: Woodstock, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Association of Wish Granting Organizations Inc

    EIN 621642147 · Headquarters: Pawcatuck, CT, US · Human Services · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  65. Assumption Reunion Inc

    EIN 061179235 · Headquarters: WOODBRIDGE, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  66. Asti USA Inc

    EIN 203208963 · Headquarters: WATERFORD, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Astrological Society of Connecticut

    EIN 061015613 · Headquarters: Rocky Hill, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Astronomical Society of Greenwich

    EIN 453188575 · Headquarters: Cos Cob, CT, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  69. Astronomical Society of New Haven Inc

    EIN 061268864 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Astronomy Beyond Borders Inc

    EIN 871806241 · Headquarters: STAMFORD, CT, US · Science & Technology · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Asylum Hill Family Medicine Center Inc

    EIN 061450170 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  72. Asylum Hill Neighborhood Association Inc

    EIN 272457517 · Headquarters: Hartford, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  73. At Home in Darieninc

    EIN 272250386 · Headquarters: DARIEN, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  74. At Home in Greenwich Inc

    EIN 261266170 · Headquarters: GREENWICH, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. At Liberty Services

    EIN 301426084 · Headquarters: Plainville, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. At Our Gate

    EIN 061622094 · Headquarters: Newtown, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  77. Atelier for Community Transformation

    EIN 844199053 · Headquarters: STAMFORD, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  78. Athan Kaloidis Memorial Foundation Inc

    EIN 262301227 · Headquarters: Middlebury, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  79. Athlete Alliance Foundation Inc

    EIN 851905156 · Headquarters: New Haven, CT, US · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Athlete Rise Initiative

    EIN 934058841 · Headquarters: New London, CT, USA · Youth Development · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  81. Athletes of Christ

    EIN 273285633 · Headquarters: DANBURY, CT, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Athleticare Inc

    EIN 923426341 · Headquarters: HAMDEN, CT, USA · Mental Health & Crisis Intervention · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  83. Atlantic Electric Cooperative

    EIN 061538798 · Headquarters: Newington, CT, US · Public & Societal Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  84. Atlantic Missionary Aviation Inc

    EIN 204980235 · Headquarters: Tolland, CT, US · Science & Technology · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  85. Atlantic States Water & Wastewater Assoc

    EIN 010502709 · Headquarters: WETHERSFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Atlas Prize Institute

    EIN 842817288 · Headquarters: Greenwich, CT, US · Medical Research · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  87. Atlas Rising Initiative Inc

    EIN 882927229 · Headquarters: glastonbury, CT, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Atma Vidya Ashrama Inc

    EIN 770656331 · Headquarters: MANCHESTER, CT, USA · International, Foreign Affairs & National Security · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  89. Aton Forest Inc

    EIN 061288452 · Headquarters: NORFOLK, CT, USA · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990

  90. Aton Forest Irrevocable Trust Dtd 112792

    EIN 066253899 · Headquarters: WINSTED, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  91. Atrium Society

    EIN 770015182 · Headquarters: Westbrook, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  92. Atypical Pdd Asperger Support Group

    EIN 061404384 · Headquarters: Bridgeport, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  93. Auctions for Animals Inc

    EIN 991585739 · Headquarters: Wilton, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  94. Audio Nerd Book Club Inc

    EIN 931786167 · Headquarters: Putnam, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Audubon Arts & Retail Association Inc

    EIN 651267569 · Headquarters: New Haven, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  96. August Family Foundation Trust

    EIN 886482090 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  97. August Matthias Amer Legion Post 63 C/o Phil Delgado

    EIN 066107535 · Headquarters: WESTPORT, CT, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Augusta Curtis Concert Band Inc

    EIN 993047886 · Headquarters: Meriden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Augusta Curtis Cultural Center

    EIN 061553139 · Headquarters: Meriden, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-EZ

  100. Augustana Homes Danbury Inc

    EIN 061441681 · Headquarters: Bridgeport, CT, USA · Housing & Shelter · Latest available filing year: 2016 · Primary form: IRS Form 990

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