Harrisburg is located in south Illinois. Harrisburg is between the Saline, Pope county. Harrisburg has 6.55 square miles of land area and 0.21 square miles of water area. As of 2010-2014, the total Harrisburg population is 8,989, which has shrunk 8.83% since 2000. The population growth rate is much lower than the state average rate of 3.62% and is much lower than the national average rate of 11.61%. Harrisburg median household income is $35,432 in 2010-2014 and has grown by 33.67% since 2000. The income growth rate is higher than the state average rate of 22.70% and is higher than the national average rate of 27.36%. Harrisburg median house value is $64,600 in 2010-2014 and has grown by 48.17% since 2000. The house value growth rate is higher than the state average rate of 34.33% and is about the same as 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 Harrisburg is worse than the state average in quality. The Harrisburg area code is 618.