Michigan County Maps

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St. Clair County, Michigan

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St. Clair County, Michigan Map

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An detailed map of St. Clair County. Click on a nearby County to view more information about that County.

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Map of Townships in St. Clair County, Michigan

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An interactive map of county subdivisions in St. Clair County. In Michigan, that can include Townships and Charter townships. Find what township you are in now.

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Map of Counties in Michigan

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An interactive map of Counties in Michigan. Click on a County to view more information about that County.

About St. Clair County, Michigan

St. Clair County is a county located in the U.S. state of Michigan and bordering the west bank of the St. Clair River. As of the 2020 census, the population was 160,383. It is the 13th-most populous county in the state. The county seat is Port Huron, located at the north end of the St. Clair River at Lake Huron. The county was created September 10, 1820, and its government was organized in 1821. It is located northeast of Detroit and is included within the Detroit–Warren–Dearborn Metropolitan Statistical Area by the Office of Management and Budget. It is also considered by the State of Michigan to be a part of The Thumb, a peninsula that is surrounded by Lake Huron in the east-central area of the state. This area is sometimes dubbed the Blue Water Area.

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This site has an interactive map of Michigan Counties. Click on the map to find your Michigan county, and view more details. You can also search for your address and use your GPS to find your Michigan County.

Find what County you are in, and see official Michigan County resources and information. Find any county in the United Stated, along with resources and links to official County websites. See a County map and local details. Looking for what county you are currently in? Find out on this map or use your device GPS to see what county you are in.