I
- Iamonia
- Iddo
- Idylwild
- Ilexhurst
- Immokalee
- Indialantic
- Indian Creek
- Indian Creek Village
- Indian Ford
- Indian Harbour Beach
- Indian Lake Estates
- Indianola
- Indian Pass
- Indian River City
- Indian River Estates
- Indian River Shores
- Indian Rocks Beach
- Indian Shores
- Indiantown
- Indrio
- Ingle
- Inglis
- Inlet Beach
- Inlikita
- Intercession City
- Interlachen
- Inverness
- Inwood
- Iona
- Iowa City
- Irvine
- Islamorada
- Island Grove
- Islandia
- Isleboro
- Isle of Palms
- Isles of Capri
- Istachatta
- Istokpoga
- Italia
- Ivan
- Ives Estates
- Izagora