Portage is located in Kalamazoo county Michigan with a geographic area of 32.3 square miles. The total population in Portage is 49,224 with 48.8% male and 51.2% female. Children under age 5 represent 6.0% of the population, under age 18 equal 22.9% of the population and over age 65 is 16.3% of the population. The median household income is $66,571, per capita income is $37,031. There are a total of 20,098 housing units with 67.6% owner occupied. Education includes 19.9% of residents that are high school graduates and 45.9% with a bachelor's degree or higher. The average temperature in Portage in the summer is 71 degrees, and in the winter 23 degrees.