Surprise is located in Maricopa county Arizona with a geographic area of 110.3 square miles. The total population in Surprise is 139,007 with 47.4% male and 52.6% female. Children under age 5 represent 5.2% of the population, under age 18 equal 24.9% of the population and over age 65 is 23.1% of the population. The median household income is $71,192, per capita income is $31,086. There are a total of 50,199 housing units with 75.5% owner occupied. Education includes 22.3% of residents that are high school graduates and 33.0% with a bachelor's degree or higher. The average temperature in Surprise in the summer is 91 degrees, and in the winter 49 degrees.
