- Ionia
- Iron Mountain
- Iron River
- Irons
- Ironton
- Ironwood
- Iroquois Island
- Irving
- Isabella
- Isabella Mobile Home Park
- Isabelle Pt
- Isadore
- Ishaward
- Ishpeming
- Island Number Eight
- Island Number Four
- Island Number One
- Island Number One
- Island Number Three
- Island Number Two
- Island View
- Isla Royale
- Ithaca
- Iva
- Ivanhoe
- Iyopawa Island