Ottawa is located in Franklin county Kansas with a geographic area of 10.3 square miles. The total population in Ottawa is 12,308 with 48.5% male and 51.5% female. Children under age 5 represent 5.1% of the population, under age 18 equal 24.0% of the population and over age 65 is 15.6% of the population. The median household income is $47,233, per capita income is $25,256. There are a total of 5,031 housing units with 61.3% owner occupied. Education includes 33.8% of residents that are high school graduates and 22.4% with a bachelor's degree or higher. The average temperature in Ottawa in the summer is 78 degrees, and in the winter 32 degrees.
