St. clairsville is located in Belmont county Ohio with a geographic area of 2.4 square miles. The total population in St. clairsville is 5,080 with 51.3% male and 48.7% female. Children under age 5 represent 5.7% of the population, under age 18 equal 17.6% of the population and over age 65 is 29.4% of the population. The median household income is $77,684, per capita income is $35,652. There are a total of 2,031 housing units with 74.8% owner occupied. Education includes 26.7% of residents that are high school graduates and 38.5% with a bachelor's degree or higher. The average temperature in St. clairsville in the summer is 73 degrees, and in the winter 32 degrees.
