- Saginaw - Zip Codes in Saginaw
- Saint Charles - Zip Codes in Saint Charles
- Saint Clair - Zip Codes in Saint Clair
- Saint Clair Shores - Zip Codes in Saint Clair Shores
- Saint Helen - Zip Codes in Saint Helen
- Saint Ignace - Zip Codes in Saint Ignace
- Saint Johns - Zip Codes in Saint Johns
- Saint Joseph - Zip Codes in Saint Joseph
- Saint Louis - Zip Codes in Saint Louis
- Saline - Zip Codes in Saline
- Sand Lake - Zip Codes in Sand Lake
- Sandusky - Zip Codes in Sandusky
- Sanford - Zip Codes in Sanford
- Saranac - Zip Codes in Saranac
- Sault Sainte Marie - Zip Codes in Sault Sainte Marie
- Schoolcraft - Zip Codes in Schoolcraft
- Scottville - Zip Codes in Scottville
- Shelby - Zip Codes in Shelby
- Shepherd - Zip Codes in Shepherd
- Sheridan - Zip Codes in Sheridan
- Smiths Creek - Zip Codes in Smiths Creek
- Southfield - Zip Codes in Southfield
- Southgate - Zip Codes in Southgate
- South Haven - Zip Codes in South Haven
- South Lyon - Zip Codes in South Lyon
- Sparta - Zip Codes in Sparta
- Spring Lake - Zip Codes in Spring Lake
- Standish - Zip Codes in Standish
- Stanton - Zip Codes in Stanton
- Stanwood - Zip Codes in Stanwood
- Sterling Heights - Zip Codes in Sterling Heights
- Stevensville - Zip Codes in Stevensville
- Stockbridge - Zip Codes in Stockbridge
- Sturgis - Zip Codes in Sturgis
- Swartz Creek - Zip Codes in Swartz Creek
- Sylvan Beach - Zip Codes in Sylvan Beach
- Tawas City - Zip Codes in Tawas City
- Taylor - Zip Codes in Taylor
- Tecumseh - Zip Codes in Tecumseh
- Temperance - Zip Codes in Temperance
- Three Oaks - Zip Codes in Three Oaks
- Three Rivers - Zip Codes in Three Rivers
- Traverse City - Zip Codes in Traverse City
- Trenton - Zip Codes in Trenton
- Troy - Zip Codes in Troy
- Twin Lake - Zip Codes in Twin Lake