Northfield is located in Rice county Minnesota with a geographic area of 8.5 square miles. The total population in Northfield is 20,399 with 48.2% male and 51.8% female. Children under age 5 represent 4.0% of the population, under age 18 equal 16.8% of the population and over age 65 is 13.8% of the population. The median household income is $69,407, per capita income is $30,455. There are a total of 6,132 housing units with 65.2% owner occupied. Education includes 19.0% of residents that are high school graduates and 49.5% with a bachelor's degree or higher. The average temperature in Northfield in the summer is 69 degrees, and in the winter 9 degrees.
