Pella is located in Marion county Iowa with a geographic area of 9.2 square miles. The total population in Pella is 10,279 with 51.3% male and 48.7% female. Children under age 5 represent 5.2% of the population, under age 18 equal 20.0% of the population and over age 65 is 17.8% of the population. The median household income is $75,848, per capita income is $38,687. There are a total of 3,914 housing units with 65.2% owner occupied. Education includes 23.8% of residents that are high school graduates and 45.5% with a bachelor's degree or higher. The average temperature in Pella in the summer is 72 degrees, and in the winter 23 degrees.