Creston is located in Union county Iowa with a geographic area of 5.2 square miles. The total population in Creston is 7,754 with 48.1% male and 51.9% female. Children under age 5 represent 6.1% of the population, under age 18 equal 21.4% of the population and over age 65 is 19.0% of the population. The median household income is $44,631, per capita income is $25,593. There are a total of 3,447 housing units with 65.2% owner occupied. Education includes 31.6% of residents that are high school graduates and 22.5% with a bachelor's degree or higher. The average temperature in Creston in the summer is 72 degrees, and in the winter 23 degrees.