Zanesville is located in Muskingum county Ohio with a geographic area of 11.8 square miles. The total population in Zanesville is 25,246 with 48.0% male and 52.0% female. Children under age 5 represent 6.9% of the population, under age 18 equal 23.4% of the population and over age 65 is 17.4% of the population. The median household income is $33,158, per capita income is $21,032. There are a total of 10,564 housing units with 44.3% owner occupied. Education includes 42.5% of residents that are high school graduates and 14.3% with a bachelor's degree or higher. The average temperature in Zanesville in the summer is 67 degrees, and in the winter 32 degrees.