County · Michigan · United States
St. Clair County ZIP codes
21 ZIP codes · 21 cities · FIPS 26147
Key facts
- State
- Michigan (MI)
- FIPS code
- 26147
- Population
- 160,089
- Median household income
- $69,349
- Median age
- 44.3
- Land area
- 721.5 sq mi (1,868.7 km²)
- Population density
- 222 / sq mi
- Area codes
- 586, 810, 989
Cities and ZIP codes in St. Clair County (21)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.