Barrios de Florida O
- Oak Grove
- Oak Hill
- Oakford Park
- Oakhurst
- Oakton Lakes
- Oakwood
- Oakwood Coral Springs
- Ocean City
- Oceanfront
- Oceanique-Queens Cove
- Oceanway
- Old Naples
- Old Northeast
- Old Saint Augustine
- Old Town
- Old West Tampa
- Olde Cypress
- Olympia Heights
- Orange City Estates
- Orangedale
- Orient Park
- Oriole Estates
- Oriole Gardens
- Ormond By The Sea
- Ortega Farms
- Ortega Hills
- Outer Deland/Deltona
- Overtown