Mandan is located in Morton county North dakota with a geographic area of 13.5 square miles. The total population in Mandan is 22,482 with 51.5% male and 48.5% female. Children under age 5 represent 6.5% of the population, under age 18 equal 23.0% of the population and over age 65 is 15.0% of the population. The median household income is $71,357, per capita income is $38,351. There are a total of 9,832 housing units with 65.8% owner occupied. Education includes 24.3% of residents that are high school graduates and 29.7% with a bachelor's degree or higher. The average temperature in Mandan in the summer is 68 degrees, and in the winter 10 degrees.