Harristown is located close to the center of Illinois. Harristown is part of Macon County. Harristown has 1.85 square miles of land area and has no water area. As of 2010-2014, the total Harristown population is 1,431, which has grown 6.95% since 2000. The population growth rate is higher than the state average rate of 3.62% and is lower than the national average rate of 11.61%. Harristown median household income is $60,491 in 2010-2014 and has grown by 40.85% since 2000. The income growth rate is much higher than the state average rate of 22.70% and is higher than the national average rate of 27.36%. Harristown median house value is $87,500 in 2010-2014 and has grown by 30.21% since 2000. The house value growth rate is lower than the state average rate of 34.33% and is much lower than the national average rate of 46.91%. As a reference, the national Consumer Price Index (CPI) inflation rate for the same period is 26.63%. On average, the public school district that covers Harristown is better than the state average in quality. The Harristown area code is 217.