- Steamboat Island
- Stone House Island
- Sauble
- Skookum
- Sandhill Mobile Home Estates
- Schomberg
- Solon
- South Fox Island
- Isla Manitou del Sur
- Silver Lawn Trailer Park
- South Fairfield
- Southgate Mobile Park
- Southland
- Springville
- Sterling Estates Mobile Home Park
- Starlight Mobile Home Park
- Sylvan Glen Mobile Estates
- Soo Junction
- Saginaw Township North
- Saginaw Township South
- Sagola
- Saint Clair Haven
- Saint James
- Salem
- Samaria
- Sand Creek
- Sawyer
- Schaffer
- Scotts
- Sears