Hillsboro is located in Hill county Texas with a geographic area of 10.9 square miles. The total population in Hillsboro is 8,384 with 51.1% male and 48.9% female. Children under age 5 represent 7.1% of the population, under age 18 equal 21.2% of the population and over age 65 is 15.6% of the population. The median household income is $49,004, per capita income is $22,829. There are a total of 2,925 housing units with 53.5% owner occupied. Education includes 28.1% of residents that are high school graduates and 19.4% with a bachelor's degree or higher. The average temperature in Hillsboro in the summer is 83 degrees, and in the winter 49 degrees.