There are 21 zip codes in St. Clair County, Michigan. The most populated is 48060, located in Port Huron. * 2024 populations estimated based on the latest ACS 5-year data.
Zip Code | Population | City |
|---|---|---|
| 48060 | 39,644 | Port Huron |
| 48059 | 15,314 | Fort Gratiot |
| 48079 | 12,572 | Saint Clair |
| 48001 | 11,691 | Algonac |
| 48040 | 9,973 | Marysville |
| 48074 | 9,594 | Smiths Creek |
| 48039 | 7,486 | Marine City |
| 48054 | 7,204 | East China |
| 48049 | 5,509 | North Street |
| 48097 | 5,333 | Yale |
| 48023 | 4,993 | Fair Haven |
| 48041 | 4,415 | Memphis |
| 48014 | 4,334 | Capac |
| 48063 | 4,093 | Columbus |
| 48064 | 4,001 | Casco |
| 48006 | 3,945 | Avoca |
| 48027 | 3,187 | Goodells |
| 48002 | 3,121 | Allenton |
| 48022 | 2,527 | Emmett |
| 48032 | 1,864 | Jeddo |
| 48028 | 961 | Harsens Island |