Johnson is located in Stanton county Kansas with a geographic area of 2.1 square miles. The total population in Johnson is 1,110 with 52.0% male and 48.0% female. Children under age 5 represent 4.2% of the population, under age 18 equal 21.0% of the population and over age 65 is 22.8% of the population. The median household income is $57,851, per capita income is $34,104. There are a total of 519 housing units with 74.6% owner occupied. Education includes 47.4% of residents that are high school graduates and 11.8% with a bachelor's degree or higher. The average temperature in Johnson in the summer is 77 degrees, and in the winter 32 degrees.