Nonprofits in Marathon, Florida

Nonprofits in Marathon, Florida. Browse 93 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 Caribbean Charitable Trust

    EIN 823112006 · Headquarters: Marathon, FL, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  2. American Legion Auxiliary Unit 154

    EIN 263736668 · Headquarters: Marathon, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  3. American Legion Post 154 Inc

    EIN 590718617 · Headquarters: MARATHON, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  4. Arkwild Inc

    EIN 650916806 · Headquarters: Marathon, FL, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  5. Boy Scout Troop 901 Inc

    EIN 271101187 · Headquarters: MARATHON, FL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  6. C B Schmitt Charitable Foundation Inc

    EIN 562286219 · Headquarters: MARATHON, FL, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  7. Christopher Massimilian Memorial Fund

    EIN 821604681 · Headquarters: Marathon, FL, US · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  8. Community Cooperative Preschool Inc

    EIN 592111579 · Headquarters: MARATHON, FL, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  9. Companion Care Fund Corporation

    EIN 842083541 · Headquarters: MARATHON, FL, US · Animal Related · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  10. Disabled American Veterans Auxiliary

    EIN 465544370 · Headquarters: Marathon, FL, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  11. Disabled American Veterans Chapter 122 of Marathon FL Inc

    EIN 592096433 · Headquarters: Marathon, FL, USA · Public & Societal Benefit · Latest available filing year: 2018 · Primary form: IRS Form 990-EZ

  12. Educational Coalition of Monroe County

    EIN 650956049 · Headquarters: Marathon, FL, US · Arts, Culture & Humanities · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  13. Fishermen's Hospital Foundation Inc

    EIN 452205564 · Headquarters: Marathon, FL, USA · Recreation & Sports · Latest available filing year: 2016 · Primary form: IRS Form 990

  14. Fishermen's Hospital Inc

    EIN 590914771 · Headquarters: MARATHON, FL, USA · Health Care · Latest available filing year: 2019 · Primary form: IRS Form 990

  15. Fishermens Health Inc

    EIN 821682066 · Headquarters: Marathon, FL, USA · Health Care · Latest available filing year: 2023 · Primary form: IRS Form 990

  16. Fishermens Hospital Auxiliary Inc

    EIN 650183514 · Headquarters: Marathon, FL, US · Health Care · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  17. Fkcanp

    EIN 472243002 · Headquarters: Marathon, FL, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  18. Florida Health Organization Inc

    EIN 264098854 · Headquarters: Marathon, FL, US · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  19. Florida Keys Airport Initiative Inc

    EIN 510534130 · Headquarters: MARATHON, FL, US · Public & Societal Benefit · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  20. Florida Keys Area Health Education Center Inc

    EIN 650183810 · Headquarters: Marathon, FL, USA · Health Care · Latest available filing year: 2024 · Primary form: IRS Form 990

  21. Florida Keys Citizens Coalition Inc

    EIN 650047798 · Headquarters: MARATHON, FL, US · Environment · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  22. Florida Keys Community Center Inc

    EIN 825221294 · Headquarters: MARATHON, FL, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990

  23. Florida Keys Drowning Prevention Task Force

    EIN 832659929 · Headquarters: Marathon, FL, US · Recreation & Sports · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  24. Florida Keys Ehlers Danlos Society Inc

    EIN 873243501 · Headquarters: Marathon, FL, US · Diseases, Disorders & Medical Disciplines · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  25. Florida Keys Hurricane Recovery Fd Inc

    EIN 823593636 · Headquarters: Marathon, FL, USA · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  26. Florida Keys Land & Sea Trust Inc

    EIN 591867599 · Headquarters: MARATHON, FL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  27. Florida Keys Vietnam Veterans Cptr #1111

    EIN 474161010 · Headquarters: Marathon, FL, US · Public & Societal Benefit · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  28. Forgotten Felines Inc

    EIN 650910937 · Headquarters: Marathon, FL, US · Animal Related · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  29. Forgotten Felines of the Florida Keys Inc

    EIN 933243250 · Headquarters: Marathon, FL, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Free & Accepted Masons of Florida

    EIN 591724622 · Headquarters: MARATHON, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Friends of Fred Inc

    EIN 372198285 · Headquarters: Marathon, FL, US · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Grace Jones Community Center Inc

    EIN 592632876 · Headquarters: MARATHON, FL, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  33. Habitat for Humanity of the Middle Keys Inc

    EIN 650279086 · Headquarters: Marathon, FL, USA · Housing & Shelter · Latest available filing year: 2025 · Primary form: IRS Form 990

  34. Heart of the Keys Recreation Association Inc

    EIN 650394817 · Headquarters: MARATHON, FL, USA · Recreation & Sports · Latest available filing year: 2024 · Primary form: IRS Form 990

  35. Hidden Harbor Marine Environmental Project Inc

    EIN 650306516 · Headquarters: Marathon, FL, USA · Animal Related · Latest available filing year: 2024 · Primary form: IRS Form 990

  36. Higherlove Mission Outreach Inc

    EIN 810571645 · Headquarters: marathon, FL, US · Human Services · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  37. Independence Cay Inc

    EIN 264290105 · Headquarters: MARATHON, FL, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  38. Island Knights Chapter of the Widows Sons

    EIN 932930134 · Headquarters: Marathon, FL, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  39. Keys Area Interdenominational Resources Inc

    EIN 650926262 · Headquarters: MARATHON, FL, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  40. Keys Health Ready Coalition Inc

    EIN 471194961 · Headquarters: MARATHON, FL, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990

  41. Lionfish Invitational Inc

    EIN 850717418 · Headquarters: Marathon, FL, USA · Food, Agriculture & Nutrition · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  42. Marathon Alumni Athletic Club Inc

    EIN 650923878 · Headquarters: Marathon, FL, US · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  43. Marathon and Lower Keys Association of Realtors Inc

    EIN 592043579 · Headquarters: MARATHON, FL, USA · Community Improvement & Capacity Building · Latest available filing year: 2024 · Primary form: IRS Form 990

  44. Marathon Animal Shelter Inc

    EIN 591367785 · Headquarters: MARATHON, FL, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  45. Marathon Association For Youth

    EIN 812444842 · Headquarters: Marathon, FL, US · Youth Development · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Marathon Chamber of Commerce

    EIN 590541790 · Headquarters: Marathon, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  47. Marathon Devil Dogs Marine Corps League Inc

    EIN 550897409 · Headquarters: Marathon, FL, US · Community Improvement & Capacity Building · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Marathon Elks Club Inc

    EIN 590883694 · Headquarters: MARATHON, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  49. Marathon Fire Rescue Benevolent Association Inc

    EIN 271498767 · Headquarters: Marathon, FL, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  50. Marathon Florida Chapter No 1027 Women of the Moose

    EIN 592123087 · Headquarters: Marathon, FL, US · Mutual & Membership Benefit · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  51. Marathon Friends of the Library Inc

    EIN 863692579 · Headquarters: Marathon, FL, US · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Marathon Garden Club Inc

    EIN 591830625 · Headquarters: Marathon, FL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  53. Marathon Lodge 1058 Loyal Order of the Moose

    EIN 591220488 · Headquarters: MARATHON, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  54. Marathon Premier Sailfish Tournament Inc

    EIN 863033634 · Headquarters: MARATHON, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  55. Marathon Volunteer Fire & Rescue Inc

    EIN 592346853 · Headquarters: Marathon, FL, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  56. Marathon Wild Bird Center Inc

    EIN 651014801 · Headquarters: Marathon, FL, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  57. Marathon Yacht Club Educational Foundation

    EIN 463127481 · Headquarters: MARATHON, FL, USA · Education · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  58. Marathon Yacht Club Inc

    EIN 591164934 · Headquarters: Marathon, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  59. Marathon Youth Sailing Inc

    EIN 205334871 · Headquarters: MARATHON, FL, US · Recreation & Sports · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  60. Micah Missions Inc

    EIN 260454748 · Headquarters: Marathon, FL, US · International, Foreign Affairs & National Security · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  61. Middle Keys Experimental Aircraft Association Inccorporated

    EIN 650890898 · Headquarters: Marathon, FL, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Middle Keys Marine Association Inc

    EIN 650450581 · Headquarters: Marathon, FL, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  63. Monroe County Commercial Fishermen Inc

    EIN 650196267 · Headquarters: MARATHON, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  64. Monroe County Firefighters Benevolent Association Inc

    EIN 472430352 · Headquarters: MARATHON, FL, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  65. Monroe County Sheriffs Explorers

    EIN 472205021 · Headquarters: MARATHON, FL, US · Public & Societal Benefit · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  66. Nate Grill Scholarship Foundation Inc

    EIN 141994047 · Headquarters: MARATHON, FL, US · Education · Latest available filing year: 2019 · Primary form: IRS Form 990-N

  67. One Hundred Club of Monroe County

    EIN 650108409 · Headquarters: Marathon, FL, US · Public Safety, Disaster Preparedness & Relief · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  68. Partnership for Policing Innovation and Reform

    EIN 863949118 · Headquarters: MARATHON, FL, USA · Crime & Legal Related · Latest available filing year: 2025 · Primary form: IRS Form 990

  69. Paytons Promise Inc

    EIN 861978952 · Headquarters: Marathon, FL, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  70. Pigeon Key Foundation Inc

    EIN 650379803 · Headquarters: MARATHON, FL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990

  71. Pops Stiglitz Scholarship Fund

    EIN 811550060 · Headquarters: Marathon, FL, US · Education · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  72. Presents in Paradise Inc

    EIN 810786659 · Headquarters: Marathon, FL, US · Public & Societal Benefit · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Professional Firefighters of Marathon Inc

    EIN 342011430 · Headquarters: MARATHON, FL, US · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  74. Professional Firefighters of Monroe County Iaff3909

    EIN 912004699 · Headquarters: Marathon, FL, USA · Employment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  75. Prosperity Academy Ministries

    EIN 933873614 · Headquarters: Marathon, FL, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  76. R3each Inc

    EIN 814500045 · Headquarters: MARATHON, FL, US · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  77. River Children Inc

    EIN 270126723 · Headquarters: Marathon, FL, US · International, Foreign Affairs & National Security · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  78. Ruckus Inspires Inc

    EIN 393088782 · Headquarters: Marathon, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  79. Sanctuary Friends Foundation of the Florida Keys Inc

    EIN 592443959 · Headquarters: MARATHON, FL, USA · Environment · Latest available filing year: 2017 · Primary form: IRS Form 990

  80. Sustainable Ocean and Reefs Inc

    EIN 994246258 · Headquarters: Marathon, FL, USA · Environment · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  81. The Dalis Foundation

    EIN 546046229 · Headquarters: MARATHON, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-PF

  82. The Frances Louise Wolfson Family Foundation

    EIN 656118860 · Headquarters: MARATHON, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  83. The Last Resort Ministry Inc

    EIN 651049272 · Headquarters: Marathon, FL, US · Religion Related · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  84. The Marathon Community Theatre Inc

    EIN 591692300 · Headquarters: MARATHON, FL, USA · Arts, Culture & Humanities · Latest available filing year: 2023 · Primary form: IRS Form 990

  85. The Snow Family Foundation

    EIN 311675559 · Headquarters: MARATHON, FL, USA · Philanthropy, Voluntarism & Grantmaking Foundations · Latest available filing year: 2025 · Primary form: IRS Form 990-PF

  86. Tommy Craft Memorial Inc

    EIN 470843544 · Headquarters: MARATHON, FL, US · Education · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  87. United States Junior Chamber of Commerce

    EIN 592751200 · Headquarters: Marathon, FL, US · Community Improvement & Capacity Building · Latest available filing year: 2007 · Primary form: IRS Form 990-N

  88. United States Power Squadrons

    EIN 596152243 · Headquarters: Marathon, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  89. Valerie Bonzer Foundation for the American Dreamer Inc

    EIN 884217827 · Headquarters: MARATHON, FL, USA · Human Services · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  90. Whiskers & Paws Forever of Monroe Cty

    EIN 205818109 · Headquarters: Marathon, FL, USA · Animal Related · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  91. Wileyart Kids Foundation

    EIN 991723984 · Headquarters: Marathon, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  92. Zonta Club of Marathon Foundation Inc

    EIN 650855402 · Headquarters: Marathon, FL, USA · Human Services · Latest available filing year: 2024 · Primary form: IRS Form 990-EZ

  93. Zonta International

    EIN 650492969 · Headquarters: Marathon, FL, US · Community Improvement & Capacity Building · Latest available filing year: 2011 · Primary form: IRS Form 990-N