Facts about St. Clair County, Michigan
St. Clair County is a county located in the U.S. state of Michigan bordering the west bank of the St. Clair River. As of the 2010 census, the population was 163,040. 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. Located northeast of Detroit, St. Clair County is part of the Detroit-Warren-Dearborn, MI Metropolitan Statistical Area. Geographically, it lies in the Thumb area of eastern Michigan.
According to the U.S. Census Bureau, the county has a total area of 837 square miles (2,170 km²), of which 721 square miles (1,870 km²) is land and 115 square miles (300 km²) (14%) is water. St. Clair County is one of five counties that form the peninsula, known as the Thumb, that projects into Lake Huron. St. Clair County is closely connected in terms of economy with its neighbors, Metropolitan Detroit and Sanilac County in Michigan, and Lambton County across the river in Ontario, Canada. Saint Clair County is the principal county in The Blue Water Area, a sub-region of the Thumb.
The 2010 United States Census indicates St. Clair County had a 2010 population of 163,040. This is a decrease of -1,195 people from the 2000 United States Census. Overall, the county had a -0.7% growth rate during this ten-year period. In 2010 there were 63,841 households and 44,238 families in the county. The population density was 226.1 per square mile (87.3 square kilometers). There were 71,822 housing units at an average density of 99.6 per square mile (38.5 square kilometers). 93.9% were White, 2.4% Black or African American, 0.5% Asian, 0.4% Native American, 0.7% of some other race and 2.0% of two or more races. 2.9% were Hispanic or Latino (of any race). 25.9% identified as of German, 10.2% Polish, 9.3% Irish, 8.5% English, 6.5% French, 6.5% American, and 5.1% Italian ancestry.
Serving St. Clair County, Michigan
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