Barrios de Florida O
- Oak Forest (2)
- Oak Grove (22)
- Oak Hill (84)
- Oak Ridge (3)
- Oak River (6)
- Oakford Park (12)
- Oakhurst (28)
- Oakland Estates (4)
- Oakland Park (99)
- Oakton Lakes (10)
- Oakwood (2)
- Oakwood Coral Springs (13)
- Ocean Breeze (4)
- Ocean City (19)
- Oceanfront (438)
- Oceanique-Queens Cove (45)
- Oceanway (48)
- Old City (3)
- Old Naples (191)
- Old Northeast (35)
- Old Port Cove (13)
- Old Port Village (1)
- Old Saint Augustine (15)
- Old Southeast (6)
- Old Town (1)
- Old West Tampa (23)
- Olde Cypress (20)
- Olympia Heights (12)
- Opa-Locka (30)
- Orange City Estates (1)
- Orange City Terrace (3)
- Orangedale (4)
- Orangewood (3)
- Orient Park (12)
- Oriole Estates (7)
- Oriole Gardens (17)
- Ormond By The Sea (61)
- Ormond Lakes (5)
- Ormond Terrace (1)
- Ortega Farms (18)
- Ortega Hills (23)
- Osceola Forest (4)
- Otis (3)
- Outer Aventura (753)
- Outer Boynton Beach (401)
- Outer Coral Springs (357)
- Outer Deland/Deltona (129)
- Outer Delray Beach (693)
- Outer E Outlying-Orange (34)
- Outer Fort Pierce (61)
- Outer Greenacres (13)
- Outer Homestead/South Dade (828)
- Outer Kendall (2)
- Outer Lehigh Acres (1)
- Outer North Side (37)
- Outer Ormand Beach (51)
- Outer Palm Beach Gardens/Jupiter (330)
- Outer Pompano Beach/Deerfield Beach (774)
- Outer Port Orange (73)
- Outer Port St Lucie (554)
- Outer Royal Palm Beach/Wellington (563)
- Outer Southwest Pensacola (166)
- Outer St Lucie Inland (18)
- Outer The Islands (2)
- Outer West Side (43)
- Outer Westchester/Tamiami (96)
- Outer Weston/Davie (192)
- Outlying Punta Gorda (223)
- Overtown (77)