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. Manos Unidas

    EIN 260201479 · Headquarters: Storrs Mansfield, CT, US · Human Services · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  2. Manresa Association

    EIN 474381888 · Headquarters: Norwalk, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. Manresa Island Corp

    EIN 992542211 · Headquarters: Norwalk, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  4. Manross Fred Tr Fbo Br Hoslib

    EIN 066338289 · Headquarters: BRISTOL, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  5. Mansfield Discovery Depot

    EIN 060864848 · Headquarters: STORRS MANFLD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Mansfield Environmental Trust Inc

    EIN 814781698 · Headquarters: Storrs Mansfield, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Mansfield Family Recreation Association Inc

    EIN 460725595 · Headquarters: MANCHESTER, CT, USA · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-EZ

  8. Mansfield Historical Society Inc

    EIN 066068580 · Headquarters: Storrs, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  9. Mansfield Little League

    EIN 061528187 · Headquarters: Storrs, CT, US · Recreation & Sports · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  10. Mansfield Middle School Association

    EIN 061078789 · Headquarters: Storrs, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Mansfield Non Profit Housing Development Corporation

    EIN 222514756 · Headquarters: STORRS, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. Mansfield Recreation Park Inc

    EIN 066069324 · Headquarters: Willington, CT, US · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  13. Mansfield Republican Town Committee

    EIN 042865476 · Headquarters: Storrs Mansfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Mansfield Retirement Community Inc

    EIN 060984952 · Headquarters: NORTH HAVEN, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  15. Mansfield Senior Center Association Inc

    EIN 222481253 · Headquarters: STORRS, CT, US · Human Services · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  16. Mansfield Training School Dist 1199

    EIN 061137549 · Headquarters: Mansfield Depot, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  17. Manufacturers Association of New Haven County Inc

    EIN 066068581 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Manufacturing Alliance Service Corporation Inc

    EIN 061370390 · Headquarters: WATERBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  19. Manuiwa Outrigger Canoe Club

    EIN 061479568 · Headquarters: Milford, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Manumit United

    EIN 814120693 · Headquarters: Uncasville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  21. Many Colors of a Woman Inc

    EIN 061380974 · Headquarters: Hartford, CT, US · Arts, Culture & Humanities · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  22. Many Mentors

    EIN 452975227 · Headquarters: Wethersfield, CT, US · Youth Development · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  23. Mapeach Partners Inc

    EIN 820595695 · Headquarters: WINDSOR, CT, US · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  24. Mapiripana-yurupari of New England Inc

    EIN 562283702 · Headquarters: New Haven, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Maple Cemetary Association Inc

    EIN 060724046 · Headquarters: EAST BERLIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. Maple Place Foundation

    EIN 134178390 · Headquarters: GUILFORD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  27. Maple Syrup Producers Association of Connecticut Inc

    EIN 320224767 · Headquarters: Manchester, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  28. Maple Village Ltd

    EIN 872596486 · Headquarters: Bloomfield, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Maplewood Court Mutual Housing Inc

    EIN 061483608 · Headquarters: TRUMBULL, CT, USA · Housing & Shelter · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  30. Maplewood Senior Living Heart FDN Inc

    EIN 463784259 · Headquarters: Westport, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  31. Mapp Inc

    EIN 862542954 · Headquarters: RIDGEFIELD, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. Maranata Bridgeport-restaurando Las Armas

    EIN 843424909 · Headquarters: Bridgeport, CT, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Maranatha Foundation Inc

    EIN 061531327 · Headquarters: DANBURY, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  34. Marathon Mind Foundation

    EIN 413156912 · Headquarters: Wethersfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Marc a and Diana R Meiches Family Foundation

    EIN 066462323 · Headquarters: TRUMBULL, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  36. Marc Damelio Memorial Fund

    EIN 900428723 · Headquarters: Wolcott, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Marc Inc of Manchester

    EIN 060712057 · Headquarters: MANCHESTER, CT, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Marcella Masinda Trust

    EIN 597262296 · Headquarters: NORWICH, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  39. March Against Revenge Porn Inc

    EIN 853584051 · Headquarters: Wolcott, CT, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  40. March for Education Foundation

    EIN 800250434 · Headquarters: Middletown, CT, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. MARCH, Inc. of Manchester

    EIN 061016068 · Headquarters: Manchester, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Marching Bears Inc

    EIN 061088974 · Headquarters: NORWALK, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Marcia M Polayes Foundation Inc C/o Zimmer and Zimmer Pc

    EIN 061160555 · Headquarters: TRUMBULL, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  44. Marcus for Change Incorporated

    EIN 463110994 · Headquarters: New Canaan, CT, USA · Public & Societal Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-PF

  45. Maren Sanchez Home Foundation Inc

    EIN 811919754 · Headquarters: Milford, CT, USA · Education · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  46. Margaret B Mack Supportive Housing Corporation

    EIN 208411466 · Headquarters: NEW HAVEN, CT, USA · Housing & Shelter · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Margaret C Griffin Child

    EIN 060911844 · Headquarters: SOUTHINGTON, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  48. Margaret Drakeley Memorial Scholarship Fund

    EIN 061718656 · Headquarters: GROTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. Margaret Patricia Eagan Charitable Foundation Trust

    EIN 206387495 · Headquarters: IVORYTON, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  50. Margery Jones Tr

    EIN 276589503 · Headquarters: Monroe, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  51. Margery P Weed Family Charitable Foundation

    EIN 066498862 · Headquarters: BLOOMFIELD, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  52. Margreta Stage Company

    EIN 260384186 · Headquarters: Essex, CT, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  53. Marhema Foundation Inc

    EIN 333885306 · Headquarters: Manchester, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Mari Hall Family Foundation Inc

    EIN 271954832 · Headquarters: Cheshire, CT, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Maria Claudina Fabregas Foundation

    EIN 061497303 · Headquarters: TRUMBULL, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2013 · Primary form: IRS Form 990-PF

  56. Maria Seymour Brooker Memorial

    EIN 060646712 · Headquarters: TORRINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Maria Ss Della Libera Title Holding Company Inc

    EIN 200596986 · Headquarters: HARTFORD, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  58. Mariachi Academy of New England Inc

    EIN 823157004 · Headquarters: North Haven, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  59. Marian Heights Inc

    EIN 510614189 · Headquarters: NEW BRITAIN, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  60. Marian Work Study Corporation

    EIN 921568627 · Headquarters: Shelton, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  61. Marie Fauth Charitable Trust C/o Cummings & Lockwood (BCD)

    EIN 202576232 · Headquarters: Greenwich, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  62. Marie G Dennett Foundation Inc

    EIN 061060970 · Headquarters: FAIRFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  63. Marilyn Goldstone Foundation Inc

    EIN 451371171 · Headquarters: Trumbull, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  64. Marilyn T Krom Foundation Corp

    EIN 473119013 · Headquarters: GUILFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  65. Marilyn W Dugan Foundation Inc

    EIN 061503775 · Headquarters: WILTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  66. Marina Callisen Memorial Fund Inc

    EIN 333508430 · Headquarters: Brookfield, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  67. Marine Cadets of America

    EIN 061314296 · Headquarters: New Haven, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  68. Marine Chemists' Association Inc

    EIN 521168405 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  69. Marine Corps League

    EIN 020804229 · Headquarters: Moodus, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  70. Marine Corps League

    EIN 060941568 · Headquarters: Plantsville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Marine Corps League

    EIN 061250778 · Headquarters: Rogers, CT, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  72. Marine Corps League

    EIN 061326293 · Headquarters: Ridgefield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Marine Corps League

    EIN 061340138 · Headquarters: Bridgeport, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Marine Corps League

    EIN 061407249 · Headquarters: portland, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  75. Marine Corps League

    EIN 061408091 · Headquarters: bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Marine Corps League

    EIN 061410416 · Headquarters: Moodus, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Marine Corps League

    EIN 061415290 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Marine Corps League

    EIN 061419805 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Marine Corps League

    EIN 061561772 · Headquarters: Prospect, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Marine Corps League

    EIN 061562016 · Headquarters: Ansonia, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  81. Marine Corps League

    EIN 061568581 · Headquarters: Unionville, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  82. Marine Corps League

    EIN 061828807 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Marine Corps League

    EIN 066099290 · Headquarters: GLASTONBURY, CT, USA · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  84. Marine Corps League

    EIN 066099295 · Headquarters: MERIDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Marine Corps League

    EIN 066099298 · Headquarters: Rogers, CT, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  86. Marine Corps League

    EIN 237049953 · Headquarters: Canaan, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Marine Corps League

    EIN 260498517 · Headquarters: Taftville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  88. Marine Corps League

    EIN 261479265 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Marine Corps League

    EIN 262561725 · Headquarters: Dayville, CT, US · Public & Societal Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  90. Marine Corps League

    EIN 263928255 · Headquarters: UNCASVILLE, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  91. Marine Corps League

    EIN 562639227 · Headquarters: Torrington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  92. Marine Corps League

    EIN 571178734 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Marine Corps League

    EIN 710989504 · Headquarters: New Britain, CT, US · Public & Societal Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  94. Marine Corps League

    EIN 743242178 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Marine Corps League

    EIN 800534385 · Headquarters: Moodus, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  96. Marine Corps League

    EIN 800617731 · Headquarters: Plantsville, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Marine Science Magnet High School Pto

    EIN 453766998 · Headquarters: Groton, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Marine Veterans of Fairfield County Inc

    EIN 832789457 · Headquarters: Ridgefield, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  99. Marino Foundation Inc

    EIN 452481221 · Headquarters: Wolcott, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  100. Marion Community Association Inc

    EIN 061502336 · Headquarters: MARION, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

First page and all pages