Watertown is located in Dodge county Wisconsin with a geographic area of 12.1 square miles. The total population in Watertown is 23,561 with 48.7% male and 51.3% female. Children under age 5 represent 4.7% of the population, under age 18 equal 22.4% of the population and over age 65 is 18.1% of the population. The median household income is $52,440, per capita income is $26,441. There are a total of 9,294 housing units with 58.8% owner occupied. Education includes 34.6% of residents that are high school graduates and 21.3% with a bachelor's degree or higher. The average temperature in Watertown in the summer is 70 degrees, and in the winter 17 degrees.