- Saline Meadows Mobile Home Park
- Saint Martin Island
- Sac Bay
- Saddlebag Island
- Saddlebrook Farms Manufactured Home Community
- Saganing
- Saginaw
- Saginaw Bay Estates Mobile Home Park
- Saginaw Township North
- Saginaw Township South
- Saginaw Valley Mobile Home Park
- Saginaw Village Mobile Home Park
- Sagola
- Saint Anthony
- Saint Charles
- Saint Clair
- Saint Clair Haven
- Saint Clair Place Mobile Home Park
- Saint Clair Shores
- Saint Elmo
- Saint Helen
- Saint Helena Island
- Saint Huberts
- Saint Ignace
- Saint Jacques
- Saint James
- Saint Johns
- Saint Johns Mobile Home Village
- Saint Joseph
- Saint Ledger Island