Hillsdale is located in Hillsdale county Michigan with a geographic area of 5.7 square miles. The total population in Hillsdale is 8,073 with 47.5% male and 52.5% female. Children under age 5 represent 4.9% of the population, under age 18 equal 19.2% of the population and over age 65 is 13.5% of the population. The median household income is $41,435, per capita income is $20,734. There are a total of 2,911 housing units with 49.0% owner occupied. Education includes 28.2% of residents that are high school graduates and 29.8% with a bachelor's degree or higher. The average temperature in Hillsdale in the summer is 68 degrees, and in the winter 23 degrees.