- Ida Heights
- Idle Forest
- Idle Grove Park
- Idlewild on the Hillsborough
- Imperial Estates
- Independence Square
- Indian Head
- Indian Hills
- Indian Lakes
- Indian Mound Estates
- Indian Mound Village
- Indian Oaks
- Indian Trails
- Indian Village
- Inglewood Park
- Innergary Point
- Innfields
- Interbay
- Interdonato Place
- Irma
- Iroquois Park
- Irvine Heights
- Irvinton Heights
- Isabel Estates
- Island Cay
- Island Ford Lake Beach
- Island Homes
- Island Pond Estates
- Island Walk
- Ivinell