Unknown & Unclassified nonprofits in Connecticut

Unknown & Unclassified nonprofits in Connecticut. Browse 7,402 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 Legion Post 0014 Dobosc- Ertel-laboc-hansen Post

    EIN 060665922 · Headquarters: VERNON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  2. American Legion Post 0180

    EIN 066107683 · Headquarters: Lebanon, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  3. American Legion Post 101 SomersCT

    EIN 066107559 · Headquarters: Somers, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. American Legion Post 127

    EIN 066107572 · Headquarters: ORANGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  5. American Legion Post 195

    EIN 066107690 · Headquarters: WATERTOWN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  6. American Legion Post 197

    EIN 060891457 · Headquarters: MARLBOROUGH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. American Legion Post 26

    EIN 060621714 · Headquarters: Stafford Springs, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  8. American Legion Post 27 Morgan Weir

    EIN 066107513 · Headquarters: Litchfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. American Legion Post 71-Building Association Inc

    EIN 060646242 · Headquarters: West Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. American Legion Post 91

    EIN 060363962 · Headquarters: MOOSUP, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  11. American Legion Tanguay Magill Post 80

    EIN 060721828 · Headquarters: Enfield, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  12. American Marketing Association Inc

    EIN 061188405 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. American Marketing Association Inc

    EIN 222757612 · Headquarters: Sandy Hook, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  14. American Outlaws Hartford Chapter Inc

    EIN 463223415 · Headquarters: Burlington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  15. American Pet Products Association Inc

    EIN 136146744 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  16. American Pharmacists Association Academy of Student Pharmacists

    EIN 066068488 · Headquarters: Storrs Mansfield, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  17. American Pharmacists Association Academy of Student Pharmacists

    EIN 453835611 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  18. American Postal Workers Union

    EIN 237112112 · Headquarters: North Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  19. American Postal Workers Union

    EIN 237340839 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  20. American Postal Workers Union 240 Stamford Conn Area Local

    EIN 237338723 · Headquarters: Stamford, CT, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  21. American Postal Workers Union Local

    EIN 066068671 · Headquarters: EAST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  22. American Production & Inven Contrl Society Apics New Haven Ct

    EIN 061023206 · Headquarters: Wallingford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  23. American Production & Inventory Control Society

    EIN 061053887 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  24. American Production and Inventory Control Society Fairfield County C

    EIN 510159515 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  25. American Rental Association

    EIN 061129732 · Headquarters: Torrington, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  26. American Rhododendron Society

    EIN 061051744 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. American Rose Society

    EIN 581782982 · Headquarters: Meriden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. American Russian Sokol Sick Benefit Society of Bridgeport Inc

    EIN 060242534 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. American School for the Deaf Alumni Association

    EIN 061384519 · Headquarters: West Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. American Society for Training and Development

    EIN 066080985 · Headquarters: Wilton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. American Society of Heating Refrig & Air Cond Engineer 004 Connecticut

    EIN 061137720 · Headquarters: CROMWELL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  32. American Society of Heating Refrigerating & A-c Engineers

    EIN 223348612 · Headquarters: Danbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  33. American Society of Interior Design Connecticut

    EIN 237417537 · Headquarters: Wilton, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  34. American Society of Media Photographers Inc

    EIN 061428608 · Headquarters: Bloomfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. American Statistical Association

    EIN 061277288 · Headquarters: North Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. American Wire Cloth Institute

    EIN 134147427 · Headquarters: FAIRFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  37. American Youth Football Inc

    EIN 262753380 · Headquarters: New Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  38. Americo V Napolitano American Legion Post 141

    EIN 066107582 · Headquarters: Trumbull, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Amita Lien Tri Association

    EIN 863377323 · Headquarters: Darien, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Amity & Woodbridge Historical Society Incorporated

    EIN 066061829 · Headquarters: Woodbridge, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Amity Education Association

    EIN 061027352 · Headquarters: WOODBRIDGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  42. Amity Teen Center Inc

    EIN 061218010 · Headquarters: Woodbridge, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  43. Ammecs Roots Initiative

    EIN 333926951 · Headquarters: Bridgeport, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Amplify Inc

    EIN 060935780 · Headquarters: GLASTONBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  45. Amvets

    EIN 060980663 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  46. Amvets

    EIN 061026511 · Headquarters: Danielson, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Amvets

    EIN 061253654 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Amvets

    EIN 061473241 · Headquarters: Brooklyn, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Amvets

    EIN 061548826 · Headquarters: West Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  50. Amvets

    EIN 066068496 · Headquarters: Danielson, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  51. Amvets

    EIN 066076503 · Headquarters: Somers, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Amvets

    EIN 066086878 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Amvets

    EIN 066087854 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Amvets

    EIN 834014230 · Headquarters: Danielson, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  55. Amvets Aka Cindy M Beaudoin Amvets Post 47

    EIN 061016821 · Headquarters: Central Village, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  56. Amy Shapiro Scholarship Foundation Inc C/o Act Financial and Tax Services Llc

    EIN 133693797 · Headquarters: STAMFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  57. Amy's Angels Corporation

    EIN 464657078 · Headquarters: SIMSBURY, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  58. An Anchor of H O P E Missions Inc

    EIN 874094363 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Ancient Accepted Scottish Rite of Free Masonry Nmj

    EIN 042737125 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  60. Ancient Accepted Scottish Rite of Free Masonry Nmj

    EIN 066051747 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  61. Ancient Accepted Scottish Rite of Free Masonry Nmj

    EIN 066051748 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  62. Ancient Accepted Scottish Rite of Free Masonry Nmj

    EIN 066051749 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  63. Ancient Accepted Scottish Rite of Free Masonry Nmj

    EIN 066052249 · Headquarters: Preston, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  64. Ancient Accepted Scottish Rite of Freemasonry Nmj

    EIN 060663249 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  65. Ancient Accepted Scottish Rite of Freemasonry Nmj

    EIN 237615951 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  66. Ancient Accepted Scottish Rite of Freemasonry Nmj

    EIN 237615952 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  67. Ancient Accepted Scottish Rite of Freemasonry Nmj Ct Council of Delib

    EIN 066051137 · Headquarters: NEWINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  68. Ancient Accepted Scottish Rite of Freemasonry Nmj Valley of Bridgepor

    EIN 237615953 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  69. Ancient Accepted Scottish Rite of Freemasonry Nmj Valley of Hartford

    EIN 061086328 · Headquarters: NEWINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  70. Ancient Accepted Scottish Rite of Freemasonry Nmj Valley of Hartford

    EIN 066050663 · Headquarters: NEWINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Ancient Accepted Scottish Rite of Freemasonry Nmj Valley of Hartford

    EIN 066050664 · Headquarters: NEWINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  72. Ancient Accepted Scottish Rite of Freemasonry Nmj Valley of Hartford

    EIN 066050665 · Headquarters: NEWINGTON, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  73. Ancient Free & Accepted Masons

    EIN 237144286 · Headquarters: NEW HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  74. Ancient Free & Accepted Masons of 115

    EIN 237123648 · Headquarters: WEST HAVEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  75. Ancient Free & Accepted Masons of 49 Jerusalem Lodge

    EIN 237144299 · Headquarters: RIDGEFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  76. Ancient Free & Accepted Masons of Conecticut

    EIN 066041174 · Headquarters: Preston, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. Ancient Free & Accepted Masons of Connecticut

    EIN 060243274 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Ancient Free & Accepted Masons of Connecticut

    EIN 060243309 · Headquarters: NIANTIC, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Ancient Free & Accepted Masons of Connecticut

    EIN 061011946 · Headquarters: CROMWELL, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Ancient Free & Accepted Masons of Connecticut

    EIN 061012983 · Headquarters: Meriden, CT, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  81. Ancient Free & Accepted Masons of Connecticut

    EIN 066037109 · Headquarters: New London, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  82. Ancient Free & Accepted Masons of Connecticut

    EIN 066038948 · Headquarters: SHELTON, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  83. Ancient Free & Accepted Masons of Connecticut

    EIN 066042751 · Headquarters: naugatuck, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Ancient Free & Accepted Masons of Connecticut

    EIN 066044830 · Headquarters: Cheshire, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Ancient Free & Accepted Masons of Connecticut

    EIN 066045290 · Headquarters: Moosup, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Ancient Free & Accepted Masons of Connecticut

    EIN 066045594 · Headquarters: Clinton, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  87. Ancient Free & Accepted Masons of Connecticut

    EIN 066045814 · Headquarters: Meriden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Ancient Free & Accepted Masons of Connecticut

    EIN 066046694 · Headquarters: WINSTED, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Ancient Free & Accepted Masons of Connecticut

    EIN 066046724 · Headquarters: Ellington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Ancient Free & Accepted Masons of Connecticut

    EIN 066046726 · Headquarters: Meriden, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Ancient Free & Accepted Masons of Connecticut

    EIN 066046992 · Headquarters: Woodstock, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Ancient Free & Accepted Masons of Connecticut

    EIN 066047113 · Headquarters: Southington, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Ancient Free & Accepted Masons of Connecticut

    EIN 066047312 · Headquarters: Madison, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Ancient Free & Accepted Masons of Connecticut

    EIN 066048349 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  95. Ancient Free & Accepted Masons of Connecticut

    EIN 066049521 · Headquarters: NEW MILFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  96. Ancient Free & Accepted Masons of Connecticut

    EIN 066050019 · Headquarters: Willimantic, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  97. Ancient Free & Accepted Masons of Connecticut

    EIN 066050497 · Headquarters: EASTON, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Ancient Free & Accepted Masons of Connecticut

    EIN 066050658 · Headquarters: East Hampton, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  99. Ancient Free & Accepted Masons of Connecticut

    EIN 066050782 · Headquarters: Darien, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Ancient Free & Accepted Masons of Connecticut

    EIN 066052726 · Headquarters: Higganum, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

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