Harrisburg is located in Boone county Missouri with a geographic area of 0.8 square miles. The total population in Harrisburg is 340 with 48.2% male and 51.8% female. Children under age 5 represent 4.7% of the population, under age 18 equal 33.2% of the population and over age 65 is 13.8% of the population. The median household income is $43,750, per capita income is $27,273. There are a total of 143 housing units with 89.5% owner occupied. Education includes 26.6% of residents that are high school graduates and 36.4% with a bachelor's degree or higher. The average temperature in Harrisburg in the summer is 77 degrees, and in the winter 32 degrees.