- Ivy Estates
- Indian Lake Estates
- Indian Pass
- Indian River City
- Indrio
- Intercession City
- Island Grove
- Italia
- Izagora
- Inwood
- Immokalee
- Indialantic
- Indian Creek Village
- Indian Harbor Beach
- Indian River Estates
- Indian River Shores
- Indian Rocks Beach
- Indian Shores
- Indiantown
- Inglis
- Interlachen
- Iona
- Islamorada
- Istachatta
- Ives Estates
- Imperial Bonita Estates Mobile Home Park
- Indian Creek Park Mobile Home Park
- Indian Field
- Island Vista Estates Mobile Home Park
- Iamonia