Somerton is located in Yuma county Arizona with a geographic area of 7.3 square miles. The total population in Somerton is 16,301 with 49.9% male and 50.1% female. Children under age 5 represent 7.3% of the population, under age 18 equal 29.7% of the population and over age 65 is 8.2% of the population. The median household income is $52,061, per capita income is $16,428. There are a total of 4,702 housing units with 66.7% owner occupied. Education includes 24.8% of residents that are high school graduates and 12.8% with a bachelor's degree or higher. The average temperature in Somerton in the summer is 89 degrees, and in the winter 49 degrees.