Hiawatha is located in Linn county Iowa with a geographic area of 4.7 square miles. The total population in Hiawatha is 7,395 with 47.1% male and 52.9% female. Children under age 5 represent 7.0% of the population, under age 18 equal 25.1% of the population and over age 65 is 13.6% of the population. The median household income is $52,383, per capita income is $31,081. There are a total of 3,007 housing units with 63.7% owner occupied. Education includes 25.5% of residents that are high school graduates and 24.8% with a bachelor's degree or higher. The average temperature in Hiawatha in the summer is 73 degrees, and in the winter 23 degrees.