Mission is located in Johnson county Kansas with a geographic area of 2.7 square miles. The total population in Mission is 9,618 with 49.9% male and 50.1% female. Children under age 5 represent 6.4% of the population, under age 18 equal 12.7% of the population and over age 65 is 14.2% of the population. The median household income is $64,703, per capita income is $39,902. There are a total of 4,838 housing units with 47.8% owner occupied. Education includes 9.8% of residents that are high school graduates and 58.2% with a bachelor's degree or higher. The average temperature in Mission in the summer is 77 degrees, and in the winter 32 degrees.