St. clair is located in St. clair county Michigan with a geographic area of 2.9 square miles. The total population in St. clair is 5,354 with 48.6% male and 51.4% female. Children under age 5 represent 3.4% of the population, under age 18 equal 20.4% of the population and over age 65 is 15.8% of the population. The median household income is $82,674, per capita income is $37,242. There are a total of 2,114 housing units with 76.1% owner occupied. Education includes 23.9% of residents that are high school graduates and 29.8% with a bachelor's degree or higher. The average temperature in St. clair in the summer is 67 degrees, and in the winter 23 degrees.
