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 Lifespan Respite Coalition Inc

    EIN 820568472 · Headquarters: HAMDEN, CT, USA · Human Services · Latest available filing year: 2016 · Primary form: IRS Form 990-EZ

  2. Connecticut Lighter Than Air Society

    EIN 222981259 · Headquarters: New Hartford, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Connecticut Lions Charities Inc

    EIN 061531784 · Headquarters: Danbury, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Connecticut Lions District 23 a Foundation Inc

    EIN 862621249 · Headquarters: BETHANY, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  5. Connecticut Lions Eye Research Foundation Inc

    EIN 066046338 · Headquarters: WATERTOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Connecticut Lions Md23 Foundation

    EIN 923002380 · Headquarters: NORTH HAVEN, CT, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  7. Connecticut Local Administrators of Social Services

    EIN 222504620 · Headquarters: West Hartford, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Connecticut Lodging Association Inc

    EIN 060901312 · Headquarters: OLD SAYBROOK, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  9. Connecticut Longhsoremen's Association Local 1398 Longshore and Terminal Worker

    EIN 060672075 · Headquarters: MILFORD, CT, USA · Employment · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  10. Connecticut Lyric Opera Inc

    EIN 141896196 · Headquarters: New London, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  11. Connecticut M G Club Ltd

    EIN 223035713 · Headquarters: Old Lyme, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Connecticut Maharashtra Mandal

    EIN 208972669 · Headquarters: Middletown, CT, US · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  13. Connecticut Main Street Center Inc

    EIN 061563290 · Headquarters: Hartford, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  14. Connecticut Manufactured Housing Association Inc

    EIN 061442220 · Headquarters: Bloomfield, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  15. Connecticut Map Society Incorporated

    EIN 814417642 · Headquarters: Hamden, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Connecticut Marine Trades Association I

    EIN 510183016 · Headquarters: ESSEX, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Connecticut Maritime Assoc Inc

    EIN 222655500 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Connecticut Maritime Coalition Inc

    EIN 061584040 · Headquarters: STONINGTON, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  19. Connecticut Maritime Foundation in Inc

    EIN 383679300 · Headquarters: STONINGTON, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  20. Connecticut Marvels Wrestling Club Inc

    EIN 843927389 · Headquarters: Norwalk, CT, US · Recreation & Sports · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  21. Connecticut Master Chorale Inc

    EIN 061555833 · Headquarters: New Milford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  22. Connecticut Master Gardener Assoc Inc

    EIN 061221782 · Headquarters: Farmington, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  23. Connecticut Mayhem Softball Inc

    EIN 821950284 · Headquarters: Vernon, CT, US · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  24. Connecticut Mediation Association Inc

    EIN 472244715 · Headquarters: Hamden, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  25. Connecticut Medical Group Management Association Inc

    EIN 061051544 · Headquarters: BLOOMFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Connecticut Meditation Center Inc

    EIN 473500828 · Headquarters: ANDOVER, CT, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Connecticut Mens Gathering Inc

    EIN 272074256 · Headquarters: West Hartford, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Connecticut Mental Health Center Foundation Inc

    EIN 061397905 · Headquarters: New Haven, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  29. Connecticut Military Corvette Club Inc

    EIN 472310660 · Headquarters: South Windsor, CT, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Connecticut Military Vehicle Collectors Inc

    EIN 223115044 · Headquarters: Portland, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Connecticut Mirage Girls Softball Inc

    EIN 061635126 · Headquarters: Newington, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. Connecticut Model Airplane Club Inc

    EIN 061634232 · Headquarters: Stratford, CT, US · Recreation & Sports · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  33. Connecticut Moose Association

    EIN 237128508 · Headquarters: NEW MILFORD, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Connecticut Morgan Horse Association Inc

    EIN 066182829 · Headquarters: MANSFIELD CENTER, CT, USA · Animal Related · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  35. Connecticut Mortgage Association

    EIN 061650716 · Headquarters: Wallingford, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  36. Connecticut Mortgage Bankers Association Inc

    EIN 222553995 · Headquarters: New Britain, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  37. Connecticut Motorcycle Riders Association Inc

    EIN 061083112 · Headquarters: New Britain, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Connecticut Municipal Animal Control Officers Association Inc

    EIN 412106805 · Headquarters: Wallingford, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Connecticut Music Educators Assn Inc

    EIN 066071077 · Headquarters: Middletown, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Connecticut Music Lovers Association Inc

    EIN 452598269 · Headquarters: hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  41. Connecticut Musical Artists Foundation Inc

    EIN 311786820 · Headquarters: Norwalk, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Connecticut National Guard Foundation Inc

    EIN 912188542 · Headquarters: Hartford, CT, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990

  43. Connecticut National Organization for Women Foundation Inc

    EIN 311779805 · Headquarters: Hartford, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  44. Connecticut Native American Inter Tribal Urban Council

    EIN 900683707 · Headquarters: New Haven, CT, US · Arts, Culture & Humanities · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  45. Connecticut Natural Gas Corporation Post -Retirement Medical Plan Trust for Non-u

    EIN 061220383 · Headquarters: ORANGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  46. Connecticut Netball Inc

    EIN 394336102 · Headquarters: WESTPORT, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Connecticut Network for Children and Youth Inc

    EIN 061319872 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Connecticut News Project Inc

    EIN 270583046 · Headquarters: HARTFORD, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Connecticut Now Inc

    EIN 510242809 · Headquarters: Danbury, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Connecticut Nuisance Wildlife Control Operators Association Inc

    EIN 061409832 · Headquarters: EAST GRANBY, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Connecticut Nurse Practitioner Group Inc D/b/a Ct Advanced Practice Rn Society

    EIN 061083899 · Headquarters: NORTH HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  52. Connecticut Nursery & Landscape Association Inc

    EIN 066068542 · Headquarters: BLOOMFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Connecticut Nurseryman's Foundation Inc C/o James Messier

    EIN 223445743 · Headquarters: VERNON, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Connecticut Nurses Association

    EIN 060305245 · Headquarters: Middletown, CT, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  55. Connecticut Nurses Foundation

    EIN 060302545 · Headquarters: EAST BERLIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  56. Connecticut Nurses Honor Guard

    EIN 883137337 · Headquarters: NEWINGTON, CT, US · Health Care · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Connecticut Nutmg State Chapter of the M G F A

    EIN 237350417 · Headquarters: Middelbury, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  58. Connecticut Object Oriented Users Group Aka Cooug

    EIN 061417129 · Headquarters: Hartford, CT, US · Recreation & Sports · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  59. Connecticut Occupational Therapy Association Inc

    EIN 237192232 · Headquarters: WEST HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  60. Connecticut Odyssey of the Mind Inc

    EIN 061604649 · Headquarters: Weston, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  61. Connecticut Olmsted Heritage Alliance Inc

    EIN 203598330 · Headquarters: Ridgefield, CT, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  62. Connecticut Onsite Wastewater Recycling Assoc

    EIN 273121806 · Headquarters: EAST HAMPTON, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  63. Connecticut Opera Guild

    EIN 066039453 · Headquarters: West Hartford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  64. Connecticut Opticians Association Inc

    EIN 061132782 · Headquarters: CROMWELL, CT, USA · Medical Research · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  65. Connecticut Oral Health Initiative

    EIN 522380576 · Headquarters: Hartford, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Connecticut Orchid Society Inc

    EIN 050634357 · Headquarters: Farmington, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  67. Connecticut Organization for Public Safety C O P S Stonington Police

    EIN 770713094 · Headquarters: Pawcatuck, CT, US · Employment · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  68. Connecticut Organization of Public Safety Employees Connecticut Organizatio

    EIN 900197742 · Headquarters: CLINTON, CT, USA · Employment · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  69. Connecticut Ornithological Association Inc

    EIN 222647204 · Headquarters: FAIRFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Connecticut Orthopaedics Foundation Inc

    EIN 843237668 · Headquarters: HAMDEN, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Connecticut Orthopedic Foundation Inc

    EIN 061481133 · Headquarters: W HARTFORD, CT, USA · Employment · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  72. Connecticut Osteopathic Medical Society Inc

    EIN 066073423 · Headquarters: Glastonbury, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  73. Connecticut Outdoor Recreation Alliance

    EIN 871497818 · Headquarters: Rockfall, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Connecticut Outlaws Travel Baseball and Softball Club Inc

    EIN 464578836 · Headquarters: MIDDLETOWN, CT, USA · Recreation & Sports · Latest available filing year: 2017 · Primary form: IRS Form 990

  75. Connecticut Package Store Association Inc

    EIN 060675906 · Headquarters: OLD SAYBROOK, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Connecticut Pain Society Inc

    EIN 061627881 · Headquarters: FAIRFIELD, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Connecticut Parachutists, Inc.

    EIN 061330726 · Headquarters: Ellington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  78. Connecticut Pardon Team Inc

    EIN 204324453 · Headquarters: NORWICH, CT, USA · Human Services · Latest available filing year: 2023 · Primary form: IRS Form 990-EZ

  79. Connecticut Parent Advocavy Center Incorporated

    EIN 222539005 · Headquarters: NEW LONDON, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  80. Connecticut Parkinsons Working Group Inc

    EIN 010737565 · Headquarters: SOUTH GLASTONBURY, CT, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Connecticut Parks Association

    EIN 814830776 · Headquarters: Meriden, CT, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Connecticut Parrot Rescue

    EIN 474650036 · Headquarters: Glastonbury, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Connecticut Parrot Society Inc

    EIN 510633050 · Headquarters: Middletown, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Connecticut Partnership for Balanced Growth Inc

    EIN 571164856 · Headquarters: West Simsbury, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  85. Connecticut Partnership for Children Inc

    EIN 264609367 · Headquarters: NAUGATUCK, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  86. Connecticut Pastel Society

    EIN 710931203 · Headquarters: BETHEL, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Connecticut Patriots Fife & Drum Corps Inc

    EIN 311617343 · Headquarters: Plainville, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Connecticut Pest Control Association Inc

    EIN 066211980 · Headquarters: TOLLAND, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  89. Connecticut Pets Alive Inc

    EIN 460901190 · Headquarters: Stamford, CT, US · Animal Related · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  90. Connecticut Pharmaceutical Association

    EIN 060787984 · Headquarters: ROCKY HILL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  91. Connecticut Pharmacists Foundation Inc

    EIN 651193552 · Headquarters: ROCKY HILL, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  92. Connecticut Philharmonic Inc

    EIN 833077961 · Headquarters: WEST HARTFORD, CT, US · Arts, Culture & Humanities · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  93. Connecticut Philharmonic Orchestra Association Inc

    EIN 060980364 · Headquarters: Greenwich, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  94. Connecticut Physical Therapy Association Inc

    EIN 223327237 · Headquarters: TOLLAND, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Connecticut Physician Assistant Foundation

    EIN 223129015 · Headquarters: Southbury, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  96. Connecticut Piecemakers Quilt Guild

    EIN 223160835 · Headquarters: Monroe, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Connecticut Pipe Trades Health Fund C/o Ct Pipe Trades Admin

    EIN 060660430 · Headquarters: WETHERSFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  98. Connecticut Playmakers Inc

    EIN 066048690 · Headquarters: Stamford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Connecticut Plumbers & Pipefitters Jatc Apprenticeship School & Training Fund

    EIN 061391840 · Headquarters: MERIDEN, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Connecticut Poetry Society Inc

    EIN 061149041 · Headquarters: West Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

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