- Island Number 419
- Island Number 28
- Island Number 29
- Irene
- Ideal
- Island 266
- Island Number 256
- Island Number 259
- Iowa Island
- Island 464
- Island 518
- Island 521
- Island Number 475
- Island Number 476
- Indian Hill
- Indian Ridge
- Innisfail
- Ivy Club of Northbrook
- Ingalton
- Isabel
- Indianola
- Industry
- Inverness
- Iola
- Irvington
- Irwin
- Ina
- Iroquois
- Irving
- Iuka