Peoria is located in Maricopa county Arizona with a geographic area of 176.1 square miles. The total population in Peoria is 172,109 with 48.0% male and 52.0% female. Children under age 5 represent 5.6% of the population, under age 18 equal 23.3% of the population and over age 65 is 17.5% of the population. The median household income is $76,423, per capita income is $35,936. There are a total of 62,180 housing units with 74.2% owner occupied. Education includes 19.4% of residents that are high school graduates and 38.5% with a bachelor's degree or higher. The average temperature in Peoria in the summer is 91 degrees, and in the winter 49 degrees.