Nonprofits in Stonington, Connecticut

Nonprofits in Stonington, Connecticut. Browse 96 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. A Child's Garden Montessori

    EIN 061238019 · Headquarters: STONINGTON, CT, USA · Education · Latest available filing year: 2011 · Primary form: IRS Form 990

  2. American Compact Inc

    EIN 871505269 · Headquarters: STONINGTON, CT, USA · Civil Rights, Social Action & Advocacy · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. American Legion

    EIN 066107532 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Archibald & Fannie E Board Mem Tr

    EIN 066171616 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-PF

  5. Capital Institute

    EIN 270726059 · Headquarters: STONINGTON, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. Castle Family Foundation C/o Thomas R Castle Co-trustee

    EIN 061471782 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  7. Coast Guard Foundation Inc

    EIN 042899862 · Headquarters: STONINGTON, CT, USA · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  8. Coast Guard Foundation Inc

    EIN 320773565 · Headquarters: Stonington, CT, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Compassionate Heart Ministries

    EIN 752771841 · Headquarters: Stonington, CT, US · Religion Related · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Connecticut Cruise Ship Task Force Inc

    EIN 550874847 · Headquarters: STONINGTON, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2013 · Primary form: IRS Form 990-EZ

  11. Connecticut Education Association

    EIN 237106760 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. 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

  13. Connecticut Maritime Foundation in Inc

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

  14. Connecticut Student Journalism Collaborative Inc

    EIN 332235310 · Headquarters: Stonington, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. Cush Inc

    EIN 260230587 · Headquarters: Stonington, CT, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  16. Daniel O Potter Charitable Foundation

    EIN 066461281 · Headquarters: STONINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2013 · Primary form: IRS Form 990-PF

  17. Dean's Mill Elementary School Pto

    EIN 201092780 · Headquarters: STONINGTON, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  18. Department of Rhode Island Aux Vfw

    EIN 611566406 · Headquarters: Stonington, CT, US · Public & Societal Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  19. Earth Optimist Club

    EIN 932137247 · Headquarters: Stonington, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Federated Garden Clubs of Connecticut Inc

    EIN 066080377 · Headquarters: Stonington, CT, US · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Free Wheelin Foundation Inc

    EIN 880543758 · Headquarters: STONINGTON, CT, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  22. Friends of Stonington Crew Inc

    EIN 061549558 · Headquarters: STONINGTON, CT, USA · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990

  23. Fromson Foundation Inc

    EIN 061074374 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  24. Goodies Run Inc

    EIN 333984544 · Headquarters: Stonington, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  25. Groton Sportsmen's Club Inc

    EIN 066048922 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  26. His Word the Bread of Life Inc

    EIN 900540556 · Headquarters: Stonington, CT, US · Religion Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  27. Hoofbeats with Purpose Inc

    EIN 843117918 · Headquarters: STONINGTON, CT, US · Human Services · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  28. Horses Healing Humans Inc

    EIN 452275677 · Headquarters: STONINGTON, CT, USA · Animal Related · Latest available filing year: 2017 · Primary form: IRS Form 990

  29. Inclusion A Sylvestre Foundation Inc

    EIN 832250521 · Headquarters: Stonington, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  30. International Reading Association Inc

    EIN 061239866 · Headquarters: Stonington, CT, US · Education · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  31. James Merrill House Foundation

    EIN 863632993 · Headquarters: Stonington, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  32. Leslie E Buck Memorial Fund

    EIN 481265537 · Headquarters: Stonington, CT, US · Education · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  33. Life Eduorg Inc

    EIN 010596826 · Headquarters: STONINGTON, CT, US · Science & Technology · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  34. Marine Chemists' Association Inc

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

  35. Marks Family Foundation

    EIN 061601029 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  36. Mind Energy Innovations Inc

    EIN 813977055 · Headquarters: Stonington, CT, US · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  37. Mpmm Foundation C/o Patricia King Pages

    EIN 061636638 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  38. Mudratz Incorporated

    EIN 472180418 · Headquarters: Stonington, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Museum Small Craft Association Inc

    EIN 222897461 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  40. Mystic Ballet Inc

    EIN 061478674 · Headquarters: STONINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Mystic Paper Beasts Incorporated

    EIN 060955036 · Headquarters: Stonington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. New England Science & Sailing Foundation Inc

    EIN 300245251 · Headquarters: STONINGTON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. New Life Ministries of Stonington Inc

    EIN 300258608 · Headquarters: Stonington, CT, US · Human Services · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  44. New London United

    EIN 454866782 · Headquarters: STONINGTON, CT, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Pine Point School Inc

    EIN 060646782 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Plexus Institute Inc

    EIN 223774475 · Headquarters: Stonington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Portuguese Holy Ghost Society Inc

    EIN 060498008 · Headquarters: STONINGTON, CT, USA · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  48. Provincetown Academy of Living Arts Inc

    EIN 237229875 · Headquarters: Stonington, CT, US · Education · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  49. Quiambaug Fire Co

    EIN 061379405 · Headquarters: Stonington, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Quoketaug Association Inc

    EIN 061270787 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  51. Robert G Youngs Family Foundation Inc

    EIN 454866710 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  52. Rotary Foundation of the Stoningtons Inc

    EIN 311660984 · Headquarters: STONINGTON, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Rotary International

    EIN 061388579 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Royal & Select Masters of Rhode Island

    EIN 473373128 · Headquarters: Stonington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Salt Marsh Opera Company

    EIN 061603236 · Headquarters: Stonington, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990

  56. SAM Advocacy Fund

    EIN 832913327 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  57. Sea Life Foundation Inc

    EIN 394778416 · Headquarters: STONINGTON, CT, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Sewell Sillman Foundation Inc

    EIN 061323792 · Headquarters: Stonington, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  59. Sky Heart and Souls Inc

    EIN 830734672 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-EZ

  60. Spirit Wind Center Inc

    EIN 471478737 · Headquarters: Stonington, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Stonington Borough Volunteer Fire Company Inc

    EIN 465353944 · Headquarters: Stonington, CT, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Stonington Cemetery Association Foundation

    EIN 333091108 · Headquarters: STONINGTON, CT, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Stonington Cemetery Association Inc

    EIN 060775074 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Stonington Community Center Inc

    EIN 060665193 · Headquarters: STONINGTON, CT, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990

  65. Stonington Community Rowing Inc

    EIN 844915816 · Headquarters: STONINGTON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Stonington Country Club Inc

    EIN 061272803 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Stonington Harbor Yacht Club Incorporated

    EIN 371431278 · Headquarters: STONINGTON, CT, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  68. Stonington Historical Society Inc

    EIN 060966415 · Headquarters: STONINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990

  69. Stonington Land Trust Inc

    EIN 412228108 · Headquarters: STONINGTON, CT, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Stonington Small Boat Association Inc

    EIN 222574168 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Stonington Soccer International Inc

    EIN 472008212 · Headquarters: Stonington, CT, US · Recreation & Sports · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  72. Stonington Soccer Tournament Comp

    EIN 921753914 · Headquarters: STONINGTON, CT, US · Recreation & Sports · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Stonington Tricentennial Scholarship Fund

    EIN 066038419 · Headquarters: Stonington, CT, US · Education · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  74. Stonington Village Improvement Assoc Inc

    EIN 061259940 · Headquarters: Stonington, CT, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Stonington Volunteer Ambulance Corps Inc

    EIN 060985677 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Stoningtonsourced

    EIN 842877387 · Headquarters: Stonington, CT, US · Food, Agriculture & Nutrition · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  77. Summit Missing Animal Response Team Inc

    EIN 471464234 · Headquarters: Stonington, CT, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Swea International Boston Chapter Co Karin Whiting Burgess

    EIN 042943746 · Headquarters: STONINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  79. Teammates for Life Inc

    EIN 473955637 · Headquarters: STONINGTON, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. The Broadway Theatre Studio

    EIN 842397874 · Headquarters: STONINGTON, CT, US · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. The Crane Charitable Trust

    EIN 462152289 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  82. The Eugene Atwood Fund

    EIN 066044477 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  83. The James P Verhalen Family Fdn Inc C/o Joyce Pandolfi

    EIN 223694939 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  84. The Maurice C La Grua Center

    EIN 260301258 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990

  85. The Michael M Wiseman and Helen a Garten Charitable Foundation

    EIN 134149893 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  86. The Sergio Franchi Music Foundation

    EIN 832303882 · Headquarters: STONINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  87. The Stonington Free Library Inc

    EIN 060665194 · Headquarters: STONINGTON, CT, USA · Education · Latest available filing year: 2024 · Primary form: IRS Form 990

  88. The Wimpfheimer Foundation Inc

    EIN 066036353 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  89. Thomas & Marguerite Moore Family Foundation

    EIN 061484436 · Headquarters: STONINGTON, CT, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2015 · Primary form: IRS Form 990-PF

  90. United Electrical Radio and Machine Workers of America

    EIN 562579807 · Headquarters: STONINGTON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Wadawanuck Club Inc

    EIN 060618894 · Headquarters: STONINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  92. Waldron-williams Fund Inc

    EIN 872642772 · Headquarters: Stonington, CT, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  93. Wheeler High School Class of 1987

    EIN 473876250 · Headquarters: Stonington, CT, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  94. Winningpolicies-org

    EIN 831296921 · Headquarters: Stonington, CT, US · Civil Rights, Social Action & Advocacy · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  95. Woodhaven Foundation

    EIN 352050235 · Headquarters: Stonington, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  96. Yellow Farmhouse Education Center Inc

    EIN 823732013 · Headquarters: STONINGTON, CT, USA · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990