Newton is located in Jasper county Iowa with a geographic area of 11.3 square miles. The total population in Newton is 15,160 with 49.6% male and 50.4% female. Children under age 5 represent 6.8% of the population, under age 18 equal 23.6% of the population and over age 65 is 20.7% of the population. The median household income is $48,417, per capita income is $25,917. There are a total of 6,418 housing units with 65.6% owner occupied. Education includes 41.8% of residents that are high school graduates and 16.4% with a bachelor's degree or higher. The average temperature in Newton in the summer is 73 degrees, and in the winter 23 degrees.