Barrios de Florida O
- Oak Grove (17)
- Oak Hill (51)
- Oak Ridge (1)
- Oak River (3)
- Oakford Park (2)
- Oakhurst (26)
- Oakland Estates (2)
- Oakland Park (103)
- Oakton Lakes (4)
- Oakwood (1)
- Oakwood Coral Springs (2)
- Ocean Breeze (2)
- Ocean City (23)
- Oceanfront (427)
- Oceanique-Queens Cove (50)
- Oceanway (47)
- Old Naples (160)
- Old Northeast (7)
- Old Port Cove (6)
- Old Saint Augustine (16)
- Old Southeast (3)
- Old Town (3)
- Old West Tampa (8)
- Olde Cypress (15)
- Olympia Heights (19)
- Orange City Estates (1)
- Orange City Terrace (2)
- Orangedale (2)
- Orangewood (2)
- Orient Park (4)
- Oriole Estates (3)
- Oriole Gardens (27)
- Ormond By The Sea (50)
- Ormond Lakes (9)
- Ormond Terrace (2)
- Ortega (2)
- Ortega Farms (9)
- Ortega Hills (24)
- Osceola Forest (3)
- Otis (1)
- Outer Aventura (792)
- Outer Boynton Beach (356)
- Outer Coral Springs (382)
- Outer Deland/Deltona (103)
- Outer Delray Beach (608)
- Outer E Outlying-Orange (16)
- Outer Greenacres (11)
- Outer Homestead/South Dade (544)
- Outer Kendall (3)
- Outer North Side (17)
- Outer Ormand Beach (35)
- Outer Palm Beach Gardens/Jupiter (275)
- Outer Pompano Beach/Deerfield Beach (769)
- Outer Port Orange (36)
- Outer Port St Lucie (96)
- Outer Royal Palm Beach/Wellington (362)
- Outer Southwest Pensacola (130)
- Outer St Lucie Inland (9)
- Outer The Islands (14)
- Outer Westchester/Tamiami (76)
- Outer Weston/Davie (166)
- Outlying Punta Gorda (253)
- Overtown (67)