| Name | Saint Clair County |
| Also Known As | St. Clair County |
| Place Type | County |
| Located in | |
| County Seat | Port Huron |
| Coordinates | | Latitude | | 42.8333638 | | 42° 50' 00.1" N | | Longitude | | -82.6665863 | | 82° 39' 59.7" W |
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| Population | 145,607 |
| Elevation | 202 m |
| Surrounding Counties | Wayne SW Macomb SW Lapeer NW Sanilac N
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| USGS GNIS FeatureID | 1625033 |
| Histopolis Place ID | 338796884 |
| Updated Apr 15, 2011 |
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| Map Layers (check box to show) | Place under cursor |
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21 Townships, 2 Charter Townships, 6 Cities (Township is assumed unless noted)