St. Clair County, MI — Demographics & Population
Population, age distribution, race & ethnicity, and education data
Population Overview
Source: Census Bureau ACS (2023)Total Population
160,089
Male
79,999
50.0%
Female
80,090
50.0%
Median Age
44.3 yrs
Avg Household Size
2.4
Foreign Born
2.0%
Race & Ethnicity
Source: Census Bureau ACS (2023)Age Distribution
Source: Census Bureau ACS (2023)Education
Source: Census Bureau ACS (2023)Bachelor's or Higher14.6%
High School or Higher38.5%
Other Demographics
Source: Census Bureau ACS (2023)Veterans
5.7%
Disability
0.0%
Non-English Home
5.7%
Married
44.4%
St. Clair County, MI has a population of 160,089 according to 2023 Census Bureau estimates. The median age is 44.3 years. The largest racial or ethnic group is White at 91.6% of the population. 14.6% of residents hold a bachelor's degree or higher. 2.0% of residents are foreign-born.