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. American Federation of State County & Municipal Employees

    EIN 222499103 · Headquarters: Easton, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  2. American Federation of State County & Municipal Employees

    EIN 222501531 · Headquarters: Madison, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. American Federation of State County & Municipal Employees

    EIN 222561782 · Headquarters: NORTHFORD, CT, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  4. American Federation of State County & Municipal Employees

    EIN 222928338 · Headquarters: New Britain, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. American Federation of State County & Municipal Employees

    EIN 222996618 · Headquarters: Trumbull, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  6. American Federation of State County & Municipal Employees

    EIN 223187137 · Headquarters: Groton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. American Federation of State County & Municipal Employees

    EIN 223202546 · Headquarters: Farmington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. American Federation of State County & Municipal Employees

    EIN 223885123 · Headquarters: Old Saybrook, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. American Federation of State County & Municipal Employees

    EIN 237078143 · Headquarters: Vernon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  10. American Federation of State County & Municipal Employees

    EIN 237100915 · Headquarters: North Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  11. American Federation of State County & Municipal Employees

    EIN 261864049 · Headquarters: granby, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. American Federation of State County & Municipal Employees

    EIN 270681678 · Headquarters: Cheshire, CT, US · Employment · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  13. American Federation of State County & Municipal Employees

    EIN 271568775 · Headquarters: Norwich, CT, US · Employment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  14. American Federation of State County & Municipal Employees

    EIN 271813269 · Headquarters: Bristol, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. American Federation of State County & Municipal Employees

    EIN 275497937 · Headquarters: East Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  16. American Federation of State County & Municipal Employees

    EIN 300882551 · Headquarters: Torrington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. American Federation of State County & Municipal Employees

    EIN 300999525 · Headquarters: NEW BRITAIN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. American Federation of State County & Municipal Employees

    EIN 331178311 · Headquarters: Weston, CT, US · Crime & Legal Related · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  19. American Federation of State County & Municipal Employees

    EIN 352488167 · Headquarters: Groton Long Point, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  20. American Federation of State County & Municipal Employees

    EIN 352578873 · Headquarters: Groton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. American Federation of State County & Municipal Employees

    EIN 364677485 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. American Federation of State County & Municipal Employees

    EIN 383709443 · Headquarters: Dayville, CT, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  23. American Federation of State County & Municipal Employees

    EIN 421756545 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. American Federation of State County & Municipal Employees

    EIN 455132032 · Headquarters: West Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  25. American Federation of State County & Municipal Employees

    EIN 510217272 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. American Federation of State County & Municipal Employees

    EIN 510234241 · Headquarters: KENSINGTON, CT, US · Employment · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  27. American Federation of State County & Municipal Employees

    EIN 521650707 · Headquarters: stamford, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. American Federation of State County & Municipal Employees

    EIN 521650708 · Headquarters: Norwalk, CT, US · Employment · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  29. American Federation of State County & Municipal Employees

    EIN 526054182 · Headquarters: Meriden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. American Federation of State County & Municipal Employees

    EIN 550845056 · Headquarters: Ansonia, CT, US · Employment · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  31. American Federation of State County & Municipal Employees

    EIN 550917224 · Headquarters: Farmington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. American Federation of State County & Municipal Employees

    EIN 611460794 · Headquarters: NEW BRITAIN, CT, US · Employment · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  33. American Federation of State County & Municipal Employees

    EIN 611700239 · Headquarters: Naugatuck, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  34. American Federation of State County & Municipal Employees

    EIN 800190373 · Headquarters: NEW BRITAIN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. American Federation of State County & Municipal Employees

    EIN 814612698 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. American Federation of State County & Municipal Employees

    EIN 852677621 · Headquarters: EAST LYME, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. American Federation of State County & Municipal Employees

    EIN 852743231 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. American Federation of State County & Municipal Employees

    EIN 900585295 · Headquarters: Norwich, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. American Federation of State County & Municipal Employees

    EIN 900588126 · Headquarters: Groton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. American Federation of State County & Municipal Employees

    EIN 912026882 · Headquarters: EAST HAVEN, CT, US · Employment · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  41. American Federation of State County & Municipal Employees 0749 Ct Loc State

    EIN 061046151 · Headquarters: MERIDEN, CT, USA · Employment · Latest available filing year: 2010 · Primary form: IRS Form 990

  42. American Federation of State County & Municipal Employees 798 Ct Loc

    EIN 066081519 · Headquarters: ENFIELD, CT, USA · Employment · Latest available filing year: 2016 · Primary form: IRS Form 990

  43. American Federation of State County & Municipal Employees Dba Afscme Local1361

    EIN 066074538 · Headquarters: MIDDLETOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  44. American Federation of State County & Municipal Employees L1138

    EIN 066107721 · Headquarters: WALLINGFORD, CT, US · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  45. American Federation of State County & Municipal Employees Local 196

    EIN 061076908 · Headquarters: NEW BRITAIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  46. American Federation of State County & Municiple Employees

    EIN 900606321 · Headquarters: Groton, CT, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. American Federation of State County 1199 Ct Loc Conn Chca Loc 1199 Pct

    EIN 060960693 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. American Federation of State County 1318

    EIN 066084980 · Headquarters: Berlin, CT, USA · Employment · Latest available filing year: 2015 · Primary form: IRS Form 990-EZ

  49. American Federation of State County 1495 Manchester Police Union

    EIN 066109903 · Headquarters: MANCHESTER, CT, USA · Employment · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  50. American Federation of State County 15 Ct Cncl Conn Cncl of Police Union

    EIN 237003680 · Headquarters: new britain, CT, USA · Crime & Legal Related · Latest available filing year: 2015 · Primary form: IRS Form 990

  51. American Federation of State County 1745 Scme

    EIN 237128720 · Headquarters: TRUMBULL, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  52. American Federation of State County 749 Ct Loc St of Ct Jud Dep Emp

    EIN 061406151 · Headquarters: Meriden, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  53. American Federation of State County 899 Scme

    EIN 066069970 · Headquarters: MILFORD, CT, USA · Employment · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  54. American Federation of State County and Municipal Employees 2663

    EIN 061011784 · Headquarters: LEBANON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. American Federation of State County and Municipal Employees 269

    EIN 066107709 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. American Federation of State County and Municipal Employees Local 1303

    EIN 066107723 · Headquarters: New Britain, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. American Federation of State County and Municipal Employees Local 158

    EIN 300203050 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. American Federation of State County and Municipal Employees Local 387

    EIN 066069239 · Headquarters: MILLDALE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. American Federation of State County and Municipal Employees Local 714

    EIN 061011199 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  60. American Federation of State County L1186ct New Britain City Emp

    EIN 066068729 · Headquarters: NEW BRITAIN, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  61. American Federation of State County Local 391

    EIN 066068478 · Headquarters: ENFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  62. American Federation of State County Local 818 Ct S

    EIN 061086204 · Headquarters: New Britain, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  63. American Federation of State County Police Dept

    EIN 237100913 · Headquarters: NORWALK, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. American Federation of State L3153ct Newtown Ct Police Dept Emps

    EIN 521245057 · Headquarters: NEWTOWN, CT, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  65. American Federation of Teachers

    EIN 061036586 · Headquarters: Bristol, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. American Federation of Teachers

    EIN 061087939 · Headquarters: West Hartford, CT, US · Education · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  67. American Federation of Teachers

    EIN 061240730 · Headquarters: Cromwell, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. American Federation of Teachers

    EIN 061352339 · Headquarters: Willimantic, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. American Federation of Teachers

    EIN 061384034 · Headquarters: Durham, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. American Federation of Teachers

    EIN 061430180 · Headquarters: NEW MILFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. American Federation of Teachers

    EIN 061574981 · Headquarters: Rocky Hill, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. American Federation of Teachers

    EIN 066092305 · Headquarters: West Simsbury, CT, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  73. American Federation of Teachers

    EIN 066107610 · Headquarters: MANSFIELD CENTER, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. American Federation of Teachers

    EIN 222500868 · Headquarters: Bozrah, CT, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. American Federation of Teachers

    EIN 222510890 · Headquarters: Newtown, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. American Federation of Teachers

    EIN 222530918 · Headquarters: SANDY HOOK, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. American Federation of Teachers

    EIN 222745501 · Headquarters: west haven, CT, US · Education · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  78. American Federation of Teachers

    EIN 237016733 · Headquarters: Salem, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  79. American Federation of Teachers

    EIN 237100886 · Headquarters: WATERFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. American Federation of Teachers

    EIN 237215159 · Headquarters: Watertown, CT, US · Employment · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  81. American Federation of Teachers

    EIN 237365414 · Headquarters: MIDDLETOWN, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. American Federation of Teachers

    EIN 237368202 · Headquarters: New London, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. American Federation of Teachers

    EIN 272420493 · Headquarters: Canton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. American Federation of Teachers

    EIN 452746431 · Headquarters: Manchester, CT, US · Education · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  85. American Federation of Teachers

    EIN 472859529 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. American Federation of Teachers

    EIN 472999227 · Headquarters: WESTBROOK, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. American Federation of Teachers

    EIN 521237199 · Headquarters: East Hartford, CT, US · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. American Federation of Teachers

    EIN 863420592 · Headquarters: ROCKY HILL, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. American Federation of Teachers

    EIN 991827142 · Headquarters: ROCKY HILL, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  90. American Federation of Teachers 1381 Middletown Federation of Teachers

    EIN 061181761 · Headquarters: MIDDLETOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. American Federation of Teachers 4200A

    EIN 061035731 · Headquarters: WALLINGFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. American Federation of Teachers 4200B Judicial Professional Employees Union

    EIN 061070119 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  93. American Federation of Teachers 5041 Windham Comm Mem Hosp Reg Nurs

    EIN 061045697 · Headquarters: MOODUS, CT, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  94. American Federation of Teachers AFT 4200

    EIN 061047533 · Headquarters: ROCKY HILL, CT, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  95. American Federation of Teachers Colchester Federation of Teachers

    EIN 222532383 · Headquarters: COLCHESTER, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  96. American Federation of Teachers CT

    EIN 066069203 · Headquarters: ROCKY HILL, CT, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  97. American Federation of Teachers Local 1018

    EIN 060737021 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. American Federation of Teachers Local 1464 Csft Aft Afl-cio

    EIN 066107604 · Headquarters: BRISTOL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  99. American Federation of Teachers Manchest Local 3175

    EIN 061044724 · Headquarters: Manchester, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  100. American Federation of Teachers Manchester Memorial Hosp Reg N

    EIN 061058101 · Headquarters: MANCHESTER, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

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