State center is located in Marshall county Iowa with a geographic area of 1.0 square miles. The total population in State center is 1,839 with 50.5% male and 49.5% female. Children under age 5 represent 9.5% of the population, under age 18 equal 36.9% of the population and over age 65 is 12.1% of the population. The median household income is $61,741, per capita income is $26,241. There are a total of 651 housing units with 74.8% owner occupied. Education includes 19.8% of residents that are high school graduates and 25.2% with a bachelor's degree or higher. The average temperature in State center in the summer is 71 degrees, and in the winter 23 degrees.
