Unknown & Unclassified nonprofits in Florida

Unknown & Unclassified nonprofits in Florida. Browse 24,854 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. Siesta Key Environmental Defense Fund Inc

    EIN 814842324 · Headquarters: Sarasota, FL, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  2. Siesta Key Village Maintenance

    EIN 273615530 · Headquarters: SARASOTA, FL, USA · Unknown & Unclassified · Latest available filing year: 2011 · Primary form: IRS Form 990-EZ

  3. Sigma Alpha Epsilon Fraternity

    EIN 261110388 · Headquarters: Pensacola, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  4. Sigma Alpha Epsilon Fraternity

    EIN 462549830 · Headquarters: Boca Raton, FL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  5. Sigma Alpha Epsilon Fraternity

    EIN 475091952 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  6. Sigma Alpha Epsilon Fraternity

    EIN 590639987 · Headquarters: GAINESVILLE, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  7. Sigma Alpha Epsilon Fraternity

    EIN 814049935 · Headquarters: Tampa, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  8. Sigma Alpha Epsilon Fraternity

    EIN 831452247 · Headquarters: Winter Park, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  9. Sigma Alpha Epsilon Fraternity

    EIN 993661025 · Headquarters: Winter Park, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  10. Sigma Alpha Epsilon Fraternity

    EIN 994970162 · Headquarters: TAMPA, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  11. Sigma Alpha Epsilon Pi-omega Chapter

    EIN 820614694 · Headquarters: Fort Myers, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  12. Sigma Alpha Mu Fraternity

    EIN 814026435 · Headquarters: Miami, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  13. Sigma Alpha Mu Fraternity- Delta Zeta Chapter

    EIN 311262778 · Headquarters: Miami, FL, USA · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-EZ

  14. Sigma Alpha Pi the National Society of Leadership and Success

    EIN 900435248 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2016 · Primary form: IRS Form 990-N

  15. Sigma Beta Rho Fraternity Incorporated

    EIN 364807382 · Headquarters: Gainesville, FL, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  16. Sigma Chi Fraternity

    EIN 593247186 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  17. Sigma Chi Fraternity

    EIN 596153511 · Headquarters: Fort Lauderdale, FL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  18. Sigma Chi Fraternity

    EIN 812229243 · Headquarters: Lakeland, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  19. Sigma Chi Fraternity - Lamba Zeta Chapter

    EIN 300518150 · Headquarters: FORT MYERS, FL, USA · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-EZ

  20. Sigma Delta Epsilon Graduate Womens Scientific Frat

    EIN 825305152 · Headquarters: Celebration, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  21. Sigma Gamma Epsilon

    EIN 815312398 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  22. Sigma Gamma Rho Sor0rity Inc

    EIN 611714507 · Headquarters: SAINT LEO, FL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  23. Sigma Gamma Rho Soroity Inc

    EIN 596197164 · Headquarters: DAYTONA BEACH, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  24. Sigma Gamma Rho Soroity Inc

    EIN 596197165 · Headquarters: JACKSONVILLE, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

  25. Sigma Gamma Rho Sorority Inc

    EIN 113786886 · Headquarters: CORAL GABLES, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  26. Sigma Gamma Rho Sorority Inc

    EIN 270257360 · Headquarters: TALLAHASSEE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  27. Sigma Gamma Rho Sorority Inc

    EIN 274493223 · Headquarters: BOCA RATON, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  28. Sigma Gamma Rho Sorority Inc

    EIN 311321639 · Headquarters: GAINESVILLE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  29. Sigma Gamma Rho Sorority Inc

    EIN 311321641 · Headquarters: MIAMI GARDENS, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  30. Sigma Gamma Rho Sorority Inc

    EIN 311333115 · Headquarters: JACKSONVILLE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  31. Sigma Gamma Rho Sorority Inc

    EIN 311360152 · Headquarters: MIRAMAR, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  32. Sigma Gamma Rho Sorority Inc

    EIN 320279998 · Headquarters: JACKSONVILLE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  33. Sigma Gamma Rho Sorority Inc

    EIN 320305577 · Headquarters: TAMPA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  34. Sigma Gamma Rho Sorority Inc

    EIN 474351688 · Headquarters: FORT MYERS, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  35. Sigma Gamma Rho Sorority Inc

    EIN 474505154 · Headquarters: PENSACOLA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  36. Sigma Gamma Rho Sorority Inc

    EIN 510223934 · Headquarters: Fort Lauderdale, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  37. Sigma Gamma Rho Sorority Inc

    EIN 591914437 · Headquarters: ORLANDO, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  38. Sigma Gamma Rho Sorority Inc

    EIN 591927904 · Headquarters: ST PETERSBURG, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  39. Sigma Gamma Rho Sorority Inc

    EIN 592092751 · Headquarters: OCALA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  40. Sigma Gamma Rho Sorority Inc

    EIN 592110280 · Headquarters: PENSACOLA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  41. Sigma Gamma Rho Sorority Inc

    EIN 592211756 · Headquarters: TALLAHASSEE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  42. Sigma Gamma Rho Sorority Inc

    EIN 592999592 · Headquarters: ORLANDO, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  43. Sigma Gamma Rho Sorority Inc

    EIN 593261158 · Headquarters: Gainesville, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  44. Sigma Gamma Rho Sorority Inc

    EIN 596194073 · Headquarters: TAMPA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  45. Sigma Gamma Rho Sorority Inc

    EIN 596197161 · Headquarters: FORT PIERCE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  46. Sigma Gamma Rho Sorority Inc

    EIN 596197162 · Headquarters: DAYTONA BEACH, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  47. Sigma Gamma Rho Sorority Inc

    EIN 596197163 · Headquarters: TALLAHASSEE, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  48. Sigma Gamma Rho Sorority Inc

    EIN 800439202 · Headquarters: BOYNTON BEACH, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  49. Sigma Gamma Rho Sorority Inc

    EIN 800695297 · Headquarters: WESLEY CHAPEL, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  50. Sigma Gamma Rho Sorority Inc

    EIN 800907740 · Headquarters: MIAMI, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  51. Sigma Gamma Rho Sorority Inc

    EIN 912083456 · Headquarters: TAMPA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  52. Sigma Gamma Rho Sorority Inc - Mu Mu Sigma Chapter

    EIN 822114030 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  53. Sigma Gamma Rho Sorority Inc-sigma Psi Chapter

    EIN 471323879 · Headquarters: DELAND, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  54. Sigma Gamma Rho Sorority Incorporated

    EIN 911893256 · Headquarters: MIAMI, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  55. Sigma Lambda Beta Fraternity

    EIN 472049819 · Headquarters: Orlando, FL, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  56. Sigma Nu Fraternity

    EIN 364536177 · Headquarters: ORLANDO, FL, US · Unknown & Unclassified · Latest available filing year: 2017 · Primary form: IRS Form 990-N

  57. Sigma Nu Fraternity

    EIN 596214580 · Headquarters: TAMPA, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  58. Sigma of Florida

    EIN 472449215 · Headquarters: Winter Park, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  59. Sigma Phi Alpha Dental Hygeine Honor Society Inc

    EIN 237038059 · Headquarters: loxahatchee groves, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  60. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 020741888 · Headquarters: Tampa, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  61. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 237052981 · Headquarters: Pinellas Park, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  62. Sigma Phi Alpha Dental Hygiene Honor Society

    EIN 364127909 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  63. Sigma Phi Epsilon Florida Zeta Alumni Volunteer Corporation

    EIN 452408227 · Headquarters: Wesley Chapel, FL, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  64. Sigma Phi Epsilon Fraternity Inc

    EIN 141988001 · Headquarters: FORT MYERS, FL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  65. Sigma Phi Gamma International Sorority Inc

    EIN 592943255 · Headquarters: Land O Lakes, FL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  66. Sigma Phi Gamma International Sorority Inc

    EIN 650987732 · Headquarters: North Fort Myers, FL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  67. Sigma Phi Gamma International Sorority Inc

    EIN 651008048 · Headquarters: North Fort Myers, FL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  68. Sigma Phi Gamma International Sorority Inc

    EIN 800286040 · Headquarters: Lady Lake, FL, US · Unknown & Unclassified · Latest available filing year: 2009 · Primary form: IRS Form 990-N

  69. Sigma Phi Gamma International Sorority Inc

    EIN 911973722 · Headquarters: North Port, FL, US · Unknown & Unclassified · Latest available filing year: 2008 · Primary form: IRS Form 990-N

  70. Sigma Sigma Sigma

    EIN 843935667 · Headquarters: Tampa, FL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  71. Sigma Sigma Sigma Inc

    EIN 271475299 · Headquarters: Longwood, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  72. Sigma Sigma Sigma Inc

    EIN 273869371 · Headquarters: SARASOTA, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  73. Sigma Sigma Sigma Inc

    EIN 320398364 · Headquarters: Jackonsville, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  74. Sigma Sigma Sigma Inc

    EIN 320422201 · Headquarters: South Pasadena, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  75. Sigma Sigma Sigma Inc

    EIN 593508952 · Headquarters: DeLand, FL, US · Unknown & Unclassified · Latest available filing year: 2022 · Primary form: IRS Form 990-N

  76. Sigma Sigma Sigma Inc

    EIN 800481666 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  77. Sigma Sigma Sigma Inc Southwest Florida Alumnae Chapter

    EIN 812982728 · Headquarters: FORT MYERS, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  78. Sigma Tau Gamma Fraternity Epsilon Omega Chapter

    EIN 472920831 · Headquarters: Melbourne, FL, US · Unknown & Unclassified · Latest available filing year: 2021 · Primary form: IRS Form 990-N

  79. Sigma Theta Tau Inc

    EIN 237406350 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  80. Sigma Theta Tau Inc

    EIN 237407410 · Headquarters: CORAL GABLES, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  81. Sigma Theta Tau Inc

    EIN 311309942 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  82. Sigma Theta Tau Inc

    EIN 311309947 · Headquarters: MIAMI SHORES, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  83. Sigma Theta Tau Inc

    EIN 363314853 · Headquarters: Apollo Beach, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  84. Sigma Theta Tau Inc

    EIN 363479096 · Headquarters: Orlando, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  85. Sigma Theta Tau Inc

    EIN 621092107 · Headquarters: tampa, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  86. Sigma Theta Tau International

    EIN 900012733 · Headquarters: Tallahassee, FL, US · Unknown & Unclassified · Latest available filing year: 2020 · Primary form: IRS Form 990-N

  87. Sigma Theta Tau International Inc

    EIN 900487005 · Headquarters: Lakeland, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  88. Sigma Theta Tau International Inc

    EIN 911935294 · Headquarters: Miami, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  89. Sigmaphichapterofphigammadelta

    EIN 473641242 · Headquarters: Miami, FL, US · Unknown & Unclassified · Latest available filing year: 2018 · Primary form: IRS Form 990-N

  90. Sila Lieder Cancer Foundation

    EIN 263493648 · Headquarters: doral, FL, US · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990-N

  91. Silicon Valley Florida Association Inc

    EIN 900886590 · Headquarters: Palm Coast, FL, US · Unknown & Unclassified · Latest available filing year: 2015 · Primary form: IRS Form 990-N

  92. Siliconsecure Foundation Inc

    EIN 932711922 · Headquarters: PARKLAND, FL, US · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990-N

  93. Silver Face Ranch

    EIN 463111282 · Headquarters: Jacksonville, FL, US · Unknown & Unclassified · Latest available filing year: 2014 · Primary form: IRS Form 990-N

  94. Silver Impact Inc

    EIN 650438571 · Headquarters: LAUDERHILL, FL, USA · Unknown & Unclassified · Latest available filing year: 2023 · Primary form: IRS Form 990

  95. Silver Lakes Elementary School

    EIN 650860393 · Headquarters: Miramar, FL, US · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990-N

  96. Silver Sands Bridle Club Inc

    EIN 237148501 · Headquarters: NEW SMYRNA BEACH, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990

  97. Silver Springs Chapter No 459 Women of the Moose

    EIN 592439725 · Headquarters: Ocala, FL, US · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-N

  98. Silver Springs Moose Lodge 1199

    EIN 591960579 · Headquarters: OCALA, FL, USA · Unknown & Unclassified · Latest available filing year: 2010 · Primary form: IRS Form 990

  99. Silver Spurs Club Inc

    EIN 591111474 · Headquarters: Kissimmee, FL, USA · Unknown & Unclassified · Latest available filing year: 2024 · Primary form: IRS Form 990

  100. Silver Star Christian Church Inc

    EIN 592631175 · Headquarters: Orlando, FL, USA · Unknown & Unclassified · Latest available filing year: 2025 · Primary form: IRS Form 990-EZ

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