Mutual & Membership Benefit nonprofits in Connecticut

Mutual & Membership Benefit nonprofits in Connecticut. Browse 477 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. Firemans Benevolent Society of the City of Hartford

    EIN 066172927 · Headquarters: NEWINGTON, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  2. First School Society

    EIN 066001406 · Headquarters: Suffield, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  3. Fish Cemetery Association

    EIN 061094958 · Headquarters: Groton, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  4. Fop Lodge 48 - Suffield Police Corp

    EIN 475219718 · Headquarters: Suffield, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Franklin Cemetery Association

    EIN 871732264 · Headquarters: North Franklin, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Franklin-halleck Chapter No 2 Royal Arch Masons

    EIN 237119330 · Headquarters: New Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  7. Fraternal Order of Eagles

    EIN 061327974 · Headquarters: Stamford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  8. Fraternal Order of Eagles

    EIN 237592646 · Headquarters: Naugatuck, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  9. Fraternal Order of Eagles

    EIN 911799372 · Headquarters: Stamford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  10. Fraternal Order of Police

    EIN 061506390 · Headquarters: Brookfield, CT, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  11. Fraternal Order of Police

    EIN 824156602 · Headquarters: Middlebury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  12. Friends of Center Cemetery Inc

    EIN 223105576 · Headquarters: East Hartford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  13. Friends of Indian Hill Cemetery Inc

    EIN 475003411 · Headquarters: MIDDLETOWN, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Friends of Lady Knights Basketball

    EIN 270200353 · Headquarters: Southington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  15. Fuss & Oneill Inc Voluntary Employees Beneficiary Association

    EIN 223056141 · Headquarters: MANCHESTER, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990

  16. G&r Valley Company Inc Health and Welfare Trust

    EIN 222496295 · Headquarters: SOUTH WINDSOR, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990

  17. Gardens of Peace Inc

    EIN 474029293 · Headquarters: CHESHIRE, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  18. Gaylordsville Cemetery Association

    EIN 060773285 · Headquarters: Gaylordsville, CT, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  19. German Order of Harugari of Connecticut Grand Lodge

    EIN 066084553 · Headquarters: BROAD BROOK, CT, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  20. Great Council of the United States Improved Order of Red Men

    EIN 060400073 · Headquarters: Winsted, CT, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  21. Great Council of the United States Improved Order of Red Men

    EIN 060610291 · Headquarters: Fairfield, CT, US · Mutual & Membership Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  22. Great Council of the United States Improved Order of Red Men

    EIN 066038621 · Headquarters: East Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  23. Great Council of the United States Improved Order of Red Men

    EIN 222892914 · Headquarters: norwalk, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  24. Great Council of the United States Improved Order of the Red Men

    EIN 060400074 · Headquarters: Winsted, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  25. Great Hill Hose INC

    EIN 066047959 · Headquarters: Seymour, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Greater Hartford Italian Police Officers Association Inc

    EIN 134236165 · Headquarters: HARTFORD, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  27. Greenwood Cemetery Association

    EIN 464057698 · Headquarters: Burlington, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990

  28. Hamden Fire Retirees Association Inc

    EIN 461590715 · Headquarters: Hamden, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Hamilton Council No 9 Royal and Select Masters of Connecticut

    EIN 237123382 · Headquarters: Meriden, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Healthyct Inc

    EIN 453366866 · Headquarters: WALLINGFORD, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990

  31. Hillside Cemetery Association

    EIN 061343221 · Headquarters: Storrs, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Hillside Cemetery Association C/o Carrie Vibert Treasurer

    EIN 060615151 · Headquarters: WEST HARTFORD, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  33. Hiram Lodge #1 Af & Am

    EIN 066020309 · Headquarters: NEW HAVEN, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2023 · Primary form: IRS Form 990

  34. Historic East Lyme Cemeteries Association

    EIN 061252515 · Headquarters: East Lyme, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Historic Mead Family Burying Groungs Associates Inc

    EIN 061305625 · Headquarters: Stamford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  36. Holy Cross Cemetery Inc

    EIN 260773943 · Headquarters: EASTON, CT, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  37. Hrp Associates Inc Employee Benefits Trust

    EIN 134242441 · Headquarters: FARMINGTON, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2019 · Primary form: IRS Form 990

  38. Ibew Local No 488 Cobra Subsidy Benefit Fund

    EIN 202368927 · Headquarters: MONROE, CT, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  39. Improved Order of Redmen Degree of Pocahontas Great Council of Connec

    EIN 237111214 · Headquarters: Oakdale, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  40. Improved Order of Redmen Degree of Pocahontas Great Council of Connec

    EIN 237111225 · Headquarters: Torrington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  41. Improved Order of Redmen Degree of Pocahontas Great Council of Connec

    EIN 237111229 · Headquarters: Branford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  42. Improved Order of Redmen Degree of Pocahontas Great Council of Connec

    EIN 237111236 · Headquarters: Naugatuck, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  43. Independent Order of Foresters

    EIN 237562967 · Headquarters: Torrington, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  44. Independent Order of Odd Fellows

    EIN 060936336 · Headquarters: WATERBURY, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  45. Independent Order of Odd Fellows

    EIN 060953183 · Headquarters: Stamford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  46. Independent Order of Odd Fellows

    EIN 060993828 · Headquarters: Naugatuck, CT, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  47. Independent Order of Odd Fellows

    EIN 061095086 · Headquarters: Mystic, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  48. Independent Order of Odd Fellows

    EIN 061096920 · Headquarters: Salem, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  49. Independent Order of Odd Fellows

    EIN 061139551 · Headquarters: New Milford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  50. Independent Order of Odd Fellows

    EIN 061182745 · Headquarters: Cheshire, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  51. Independent Order of Odd Fellows

    EIN 061191654 · Headquarters: Waterbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  52. Independent Order of Odd Fellows

    EIN 066038061 · Headquarters: East Hartford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  53. Independent Order of Odd Fellows

    EIN 066038748 · Headquarters: New Milford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  54. Independent Order of Odd Fellows

    EIN 066044509 · Headquarters: Waterbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  55. Independent Order of Odd Fellows

    EIN 066047128 · Headquarters: Waterbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  56. Independent Order of Odd Fellows

    EIN 066057990 · Headquarters: NAUGATUCK, CT, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  57. Independent Order of Odd Fellows

    EIN 066065225 · Headquarters: WARREN, CT, US · Mutual & Membership Benefit · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  58. Independent Order of Odd Fellows

    EIN 066086406 · Headquarters: Stratford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  59. Independent Order of Odd Fellows

    EIN 161652509 · Headquarters: warren, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  60. Independent Order of Odd Fellows

    EIN 237141366 · Headquarters: NAUGATUCK, CT, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  61. Independent Order of Odd Fellows

    EIN 237596765 · Headquarters: Colchester, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  62. Independent Order of Odd Fellows

    EIN 510145615 · Headquarters: Stratford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  63. Independent Order of Odd Fellows

    EIN 911827998 · Headquarters: NAUGATUCK, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  64. Independent Order of Odd Fellows

    EIN 911971715 · Headquarters: new milford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  65. International Masons

    EIN 237532356 · Headquarters: West Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  66. International Masons

    EIN 237532367 · Headquarters: Northford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  67. International Melges 24 Class Association Inc

    EIN 845174317 · Headquarters: Rocky Hill, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  68. International Society of Certified Employee Benefit Specialists Inc

    EIN 061194703 · Headquarters: Monroe, CT, US · Mutual & Membership Benefit · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  69. Italian Fraternal Society of New Britain Inc

    EIN 060401805 · Headquarters: NEW BRITAIN, CT, US · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  70. Jewish Cemetery Association of Greater Waterbury

    EIN 550834515 · Headquarters: Southbury, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Jewish Federation of Greater New Haven

    EIN 205011721 · Headquarters: WOODBRIDGE, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Johnson Memorial Medical Center Inc Voluntary Employees Benefit Association

    EIN 463997467 · Headquarters: STAFFORD SPRINGS, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2017 · Primary form: IRS Form 990

  73. Kappa Sigma Alumni Assoc of Ct

    EIN 272089011 · Headquarters: Bridgeport, CT, US · Mutual & Membership Benefit · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  74. King Solomons Temple Corporation of Woodbury

    EIN 300716514 · Headquarters: Woodbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  75. Knights Club of Avon Inc

    EIN 060872415 · Headquarters: Avon, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Knights of Columbus

    EIN 010713151 · Headquarters: TRUMBULL, CT, US · Mutual & Membership Benefit · Latest available filing year: 2012 · Primary form: IRS Form 990-N

  77. Knights of Columbus

    EIN 060416465 · Headquarters: Hartford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Knights of Columbus

    EIN 060724355 · Headquarters: New Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Knights of Columbus

    EIN 060978188 · Headquarters: Ansonia, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  80. Knights of Columbus

    EIN 061037609 · Headquarters: Westbrook, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  81. Knights of Columbus

    EIN 061085968 · Headquarters: New Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  82. Knights of Columbus

    EIN 061343223 · Headquarters: Norwich, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  83. Knights of Columbus

    EIN 061343677 · Headquarters: Ansonia, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. Knights of Columbus

    EIN 061344627 · Headquarters: Hamden, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  85. Knights of Columbus

    EIN 061392070 · Headquarters: NORTH BRANFORD, CT, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  86. Knights of Columbus

    EIN 061476977 · Headquarters: Brookfield, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  87. Knights of Columbus

    EIN 061498021 · Headquarters: Waterbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2013 · Primary form: IRS Form 990-N

  88. Knights of Columbus

    EIN 061524547 · Headquarters: Durham, CT, US · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Knights of Columbus

    EIN 061584733 · Headquarters: Norwich, CT, US · Mutual & Membership Benefit · Latest available filing year: 2011 · Primary form: IRS Form 990-N

  90. Knights of Columbus

    EIN 066061153 · Headquarters: Middletown, CT, US · Mutual & Membership Benefit · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  91. Knights of Columbus

    EIN 066182034 · Headquarters: Preston, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  92. Knights of Columbus

    EIN 113719968 · Headquarters: Prospect, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  93. Knights of Columbus

    EIN 205372145 · Headquarters: Cheshire, CT, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  94. Knights of Columbus

    EIN 237107480 · Headquarters: Glastonbury, CT, US · Mutual & Membership Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  95. Knights of Columbus

    EIN 237107547 · Headquarters: West Haven, CT, US · Mutual & Membership Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  96. Knights of Columbus

    EIN 237142673 · Headquarters: stafford springs, CT, USA · Mutual & Membership Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  97. Knights of Columbus

    EIN 237142828 · Headquarters: branford, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  98. Knights of Columbus

    EIN 237142867 · Headquarters: Fairfield, CT, US · Mutual & Membership Benefit · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  99. Knights of Columbus

    EIN 237174466 · Headquarters: MERIDEN, CT, US · Mutual & Membership Benefit · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  100. Knights of Columbus

    EIN 237333336 · Headquarters: Norwich, CT, US · Mutual & Membership Benefit · Latest available filing year: 2009 · Primary form: IRS Form 990-N

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