St. Clair County on the map of Michigan 2025. Cities, roads, borders and directions in St. Clair County of Michigan.
USA / Michigan / St. Clair CountySt. Clair County is placed on the eastern edge of Michigan. The total population of St. Clair County exceeds 160 thousand people. The county, established back in 1820 from part of Macomb County, covers an area of 837 square miles. The county seat of St. Clair County is Port Huron. The county is named after either Arthur St. Clair, first governor of the Northwest Territory, or Saint Clair on whose feast day Lake St. Clair was discovered. This map shows the borders of St. Clair County as well as neighboring counties, including major highways and natural objecsts as of 2025. Zoom in or out of the map using the plus/minus panel. Move the center of this map by dragging it. Also check out the satellite map of St. Clair County.
The borders of St. Clair County over the map of Michigan
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Full list of Michigan maps
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