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. Orange Volunteer Fire Assoc Inc

    EIN 066046688 · Headquarters: ORANGE, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  2. Oratory of the Little Way Inc

    EIN 066079146 · Headquarters: OLD GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  3. Orchard Hill Parent Teachers Organization

    EIN 222816555 · Headquarters: South Windsor, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Order of Centurions Inc

    EIN 223061142 · Headquarters: Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  5. Order of Eastern Star Inc of Connecticut

    EIN 066040996 · Headquarters: Canterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  6. Order of Hermanns Sons Inc

    EIN 066040897 · Headquarters: Guilford, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Order of the Amaranth Inc Supreme Council

    EIN 237614058 · Headquarters: Coventry, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Order of the Amaranth Supreme

    EIN 060368145 · Headquarters: Canterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  9. Order of the Eastern Star Inc of Connecticut

    EIN 060940428 · Headquarters: Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Order of the Eastern Star Inc of Connecticut

    EIN 060941325 · Headquarters: Shelton, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  11. Order of the Eastern Star Inc of Connecticut

    EIN 060944225 · Headquarters: LAKESIDE, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  12. Order of the Eastern Star Inc of Connecticut

    EIN 066039788 · Headquarters: Cromwell, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Order of the Eastern Star Inc of Connecticut

    EIN 237126114 · Headquarters: Monroe, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  14. Order of the Eastern Star Inc of Connecticut

    EIN 237126120 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  15. Order of the Eastern Star Inc of Connecticut

    EIN 237128225 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  16. Order of the Eastern Star Inc of Connecticut

    EIN 237128232 · Headquarters: Canterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Order of the Eastern Star Inc of Connecticut

    EIN 237128235 · Headquarters: Lyme, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  18. Order of the Eastern Star Inc of Connecticut

    EIN 237128256 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Order of the Eastern Star Inc of Connecticut

    EIN 237128258 · Headquarters: Preston, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  20. Order of the Eastern Star Inc of Connecticut

    EIN 237128271 · Headquarters: Monroe, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  21. Order of the Eastern Star Inc of Connecticut

    EIN 237128278 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Order of the Eastern Star Inc of Connecticut

    EIN 237128281 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  23. Order of the Eastern Star Inc of Connecticut

    EIN 237128285 · Headquarters: Pomfret Center, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Order of the Eastern Star of Connecticut

    EIN 237128236 · Headquarters: Cheshire, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  25. Osborn Hill School Pta

    EIN 060994087 · Headquarters: FAIRFIELD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  26. Oscar Frederick Peyser Foundation Inc

    EIN 136065515 · Headquarters: HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-PF

  27. Oscar H Cpowan Post 3 American Legion Building Assoc Inc

    EIN 061135168 · Headquarters: STAMFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Oswegatchie School Organization

    EIN 061055804 · Headquarters: Waterford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  29. Otis Library

    EIN 060669124 · Headquarters: NORWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  30. Otter Cove Association Inc

    EIN 066079283 · Headquarters: Old Saybrook, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  31. Our Children's Center

    EIN 061223504 · Headquarters: WEST HARTFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  32. Our Cure 4 Life

    EIN 472455610 · Headquarters: COLUMBIA, CT, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  33. Our Vision Inc

    EIN 061019196 · Headquarters: Westport, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Ousatonic Fish & Game Protective Association Inc

    EIN 061056971 · Headquarters: New Milford, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  35. Out Film CT Inc

    EIN 222990670 · Headquarters: Hartford, CT, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  36. Out of the Crate Inc

    EIN 811362506 · Headquarters: RIDGEFIELD, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  37. Owls Inc

    EIN 061079806 · Headquarters: Ridgefield, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  38. Ox Ridge Kennel Club Incorporated

    EIN 223109664 · Headquarters: Chester, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Ox Ridge Riding and Racquet Club Inc

    EIN 060482020 · Headquarters: DARIEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Oxford Ambulance Association Inc

    EIN 066045769 · Headquarters: OXFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Oxford Flying Club Inc

    EIN 061337152 · Headquarters: OXFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  42. Oxford Friends for Charity Inc

    EIN 473401802 · Headquarters: Oxford, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  43. Oxford Land Trust Inc

    EIN 066323106 · Headquarters: Oxford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Oxford Parent Teacher Organization Inc

    EIN 061064984 · Headquarters: OXFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  45. Pachaug Cemetary Association Inc

    EIN 066040760 · Headquarters: GRISWOLD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  46. Painting & Decorating Contractors of America

    EIN 911774429 · Headquarters: North Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  47. Palmer Helen M Estate Dar Fd Co Tr C/o Cassandra Leach

    EIN 066029229 · Headquarters: BROOKLYN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  48. Panwy Foundation Inc C/o Eagle Cap Int'l Llc

    EIN 136130759 · Headquarters: GREENWICH, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  49. Parables the Undergraduate Storytelling Society

    EIN 465184494 · Headquarters: New Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  50. Paradise Country Club Inc

    EIN 060737734 · Headquarters: HAMDEN, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  51. Parent Booster USA

    EIN 823730032 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  52. Parent Booster USA Inc

    EIN 274103724 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Parent Booster USA Inc

    EIN 394200067 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Parent Booster USA Inc

    EIN 412675153 · Headquarters: Ridgefield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Parent Booster USA Inc

    EIN 412785346 · Headquarters: Ridgefield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  56. Parent Booster USA Inc

    EIN 421811137 · Headquarters: Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  57. Parent Booster USA Inc

    EIN 463430006 · Headquarters: Granby, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  58. Parent Booster USA Inc

    EIN 811314122 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Parent Booster USA Inc

    EIN 811928904 · Headquarters: Seymour, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  60. Parent Booster USA Inc

    EIN 812156197 · Headquarters: Madison, CT, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  61. Parent Booster USA Inc

    EIN 822790442 · Headquarters: West Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  62. Parent Booster USA Inc

    EIN 822957375 · Headquarters: HARTFORD, CT, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  63. Parent Booster USA Inc

    EIN 842778840 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  64. Parent Booster USA Inc

    EIN 884376747 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  65. Parent Booster USA Inc

    EIN 931518302 · Headquarters: Deep River, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  66. Parent Booster USA Inc

    EIN 932459859 · Headquarters: Wilton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  67. Parent Booster USA Inc

    EIN 932832687 · Headquarters: Ridgefield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  68. Parent Booster USA Inc

    EIN 933872866 · Headquarters: Ridgefield, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  69. Parent Booster USA Inc

    EIN 933951162 · Headquarters: Enfield, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  70. Parent Booster USA Inc

    EIN 934235776 · Headquarters: Branford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  71. Parent Booster USA Inc

    EIN 934629431 · Headquarters: Wilton, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Parent Booster USA Inc

    EIN 990516025 · Headquarters: Wallingford, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Parent Teacher Assoc of Ct

    EIN 883733521 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Parent Teacher Association Connecticut Inc

    EIN 364906395 · Headquarters: Norwalk, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Parent Teacher Association of Connecticut Inc

    EIN 060662162 · Headquarters: MILFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  76. Parent Teacher Association of Connecticut Inc

    EIN 060993845 · Headquarters: Andover, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  77. Parent Teacher Association of Connecticut Inc

    EIN 060994032 · Headquarters: HAMDEN, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  78. Parent Teacher Association of Connecticut Inc

    EIN 061008326 · Headquarters: Willington, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Parent Teacher Association of Connecticut Inc

    EIN 061254873 · Headquarters: TRUMBULL, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  80. Parent Teacher Association of Connecticut Inc

    EIN 066069279 · Headquarters: Stratford, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  81. Parent Teacher Association of Connecticut Inc

    EIN 066069992 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  82. Parent Teacher Association of Connecticut Inc

    EIN 066107742 · Headquarters: STRATFORD, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  83. Parent Teacher Association of Connecticut Inc

    EIN 237188851 · Headquarters: Manchester, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  84. Parent Teacher Association of Connecticut Inc

    EIN 301207790 · Headquarters: Sandy Hook, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  85. Parent Teacher Association of Connecticut Inc

    EIN 333217104 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  86. Parent Teacher Association of Connecticut Inc

    EIN 352547379 · Headquarters: Waterbury, CT, US · Unknown & Unclassified · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  87. Parent Teacher Association of Connecticut Inc

    EIN 352641821 · Headquarters: Monroe, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Parent Teacher Association of Connecticut Inc

    EIN 352657719 · Headquarters: East Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  89. Parent Teacher Association of Connecticut Inc

    EIN 352670977 · Headquarters: Plymouth, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  90. Parent Teacher Association of Connecticut Inc

    EIN 365113047 · Headquarters: West Haven, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  91. Parent Teacher Association of Connecticut Inc

    EIN 371709308 · Headquarters: Hartford, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  92. Parent Teacher Association of Connecticut Inc

    EIN 371745405 · Headquarters: New Britain, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  93. Parent Teacher Association of Connecticut Inc

    EIN 371865428 · Headquarters: Hamden, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  94. Parent Teacher Association of Connecticut Inc

    EIN 371900599 · Headquarters: Norwalk, CT, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  95. Parent Teacher Association of Connecticut Inc

    EIN 384048899 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Parent Teacher Association of Connecticut Inc

    EIN 384093284 · Headquarters: Norwalk, CT, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  97. Parent Teacher Association of Connecticut Inc

    EIN 462151735 · Headquarters: Bristol, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  98. Parent Teacher Association of Connecticut Inc

    EIN 465680590 · Headquarters: STAFFORD SPGS, CT, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  99. Parent Teacher Association of Connecticut Inc

    EIN 472140621 · Headquarters: Stafford Springs, CT, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  100. Parent Teacher Association of Connecticut Inc

    EIN 542152960 · Headquarters: Avon, CT, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

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