St. john is located in Stafford county Kansas with a geographic area of 1.9 square miles. The total population in St. john is 1,377 with 50.8% male and 49.2% female. Children under age 5 represent 8.1% of the population, under age 18 equal 25.1% of the population and over age 65 is 19.3% of the population. The median household income is $54,962, per capita income is $25,099. There are a total of 519 housing units with 75.5% owner occupied. Education includes 21.4% of residents that are high school graduates and 27.2% with a bachelor's degree or higher. The average temperature in St. john in the summer is 78 degrees, and in the winter 32 degrees.
