Barrios de Florida O
- Oak Forest (1)
- Oak Grove (11)
- Oak Hill (51)
- Oak Ridge (1)
- Oak River (3)
- Oakford Park (7)
- Oakhurst (8)
- Oakland Estates (1)
- Oakland Park (94)
- Oakton Lakes (6)
- Oakwood (1)
- Oakwood Coral Springs (4)
- Ocean Breeze (3)
- Ocean City (15)
- Oceanfront (384)
- Oceanique-Queens Cove (41)
- Oceanway (34)
- Odessa (3)
- Old City (2)
- Old Cutler (3)
- Old Naples (165)
- Old Northeast (17)
- Old Port Cove (13)
- Old Saint Augustine (8)
- Old Southeast (6)
- Old Town (3)
- Old West Tampa (8)
- Olde Cypress (11)
- Olympia Heights (14)
- Orange City Estates (1)
- Orange City Terrace (1)
- Orange Park (201)
- Orangedale (1)
- Orangewood (1)
- Orient Park (8)
- Oriole Estates (4)
- Oriole Gardens (7)
- Ormond By The Sea (55)
- Ormond Lakes (6)
- Ormond On The Bay West (1)
- Ormond Terrace (1)
- Ortega (2)
- Ortega Farms (8)
- Ortega Hills (26)
- Osceola Forest (4)
- Otis (3)
- Outer Aventura (616)
- Outer Boynton Beach (349)
- Outer Coral Springs (274)
- Outer Deland/Deltona (91)
- Outer Delray Beach (515)
- Outer E Outlying-Orange (17)
- Outer Fort Pierce (21)
- Outer Greenacres (9)
- Outer Homestead/South Dade (471)
- Outer North Side (29)
- Outer Ormand Beach (31)
- Outer Palm Beach Gardens/Jupiter (290)
- Outer Pompano Beach/Deerfield Beach (637)
- Outer Port Orange (48)
- Outer Port St Lucie (374)
- Outer Royal Palm Beach/Wellington (384)
- Outer Southwest Pensacola (148)
- Outer St Lucie Inland (5)
- Outer Weston/Davie (180)
- Outlying Punta Gorda (257)
- Overtown (33)