ZIP CodesZIP codes in St. Clair County, Michigan
St. Clair County, Michigan has 23 ZIP codes in this list, from 48001 to 48097. They cover 22 places, among them Port Huron, Algonac, Allenton and Anchorville.
Nothing in this county matches.
| ZIP code | Place | Land area (sq mi) | Map point |
|---|---|---|---|
| 48001 | Algonac | 19.0 | 42.637, -82.587 |
| 48002 | Allenton | 37.1 | 42.939, -82.920 |
| 48004 | Anchorville | no area | 42.824, -82.665 |
| 48006 | Avoca | 71.4 | 43.075, -82.695 |
| 48014 | Capac | 36.8 | 43.026, -82.930 |
| 48022 | Emmett | 35.3 | 42.987, -82.785 |
| 48023 | Fair Haven | 17.0 | 42.702, -82.669 |
| 48027 | Goodells | 37.4 | 42.944, -82.692 |
| 48028 | Harsens Island | 17.8 | 42.585, -82.586 |
| 48032 | Jeddo | 36.9 | 43.122, -82.600 |
| 48039 | Marine City | 23.0 | 42.686, -82.550 |
| 48040 | Marysville | 6.9 | 42.913, -82.481 |
| 48041 | Memphis | 40.0 | 42.941, -82.805 |
| 48049 | North Street | 35.7 | 43.035, -82.575 |
| 48054 | East China | 40.6 | 42.777, -82.544 |
| 48059 | Fort Gratiot | 31.7 | 43.089, -82.490 |
| 48060 | Port Huron | 20.7 | 42.996, -82.460 |
| 48061 | Port Huron | no area | 42.971, -82.425 |
| 48063 | Columbus | 36.8 | 42.889, -82.668 |
| 48064 | Casco | 37.0 | 42.767, -82.673 |
| 48074 | Smiths Creek | 37.2 | 42.905, -82.568 |
| 48079 | Saint Clair | 41.9 | 42.825, -82.513 |
| 48097 | Yale | 76.2 | 43.126, -82.829 |
The ZIP code areas of St. Clair County add up to about 736 square miles of land (1,907 sq km) as the Census Bureau draws them. The largest is 48097 (Yale), with 76.2 square miles.
Places with more than one code here: Port Huron (2 codes).
Using these codes
- In an address, the ZIP code comes last, after the city and the two-letter state: Algonac, MI 48001.
- Tap a ZIP code to open it in the look-up, with a copy button for the address line.
- A code can cross a county line, and one town can have several codes. The table shows the main place of each code.
- "No area" means the Census Bureau draws no area for that code. Such codes are usually for post office boxes or a single building.
Places and counties: GeoNames. Areas: U.S. Census Bureau, 2024 ZIP Code Tabulation Areas. Checked in November 2026. This site is not connected with the United States Postal Service; for mailing, confirm the address with USPS.