Libertyville is located in north Illinois. Libertyville is part of Lake County. Libertyville has 8.81 square miles of land area and 0.34 square miles of water area. As of 2010-2014, the total Libertyville population is 20,398, which has shrunk 1.66% 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%. Libertyville median household income is $112,572 in 2010-2014 and has grown by 26.73% since 2000. The income growth rate is higher than the state average rate of 22.70% and is about the same as the national average rate of 27.36%. Libertyville median house value is $394,700 in 2010-2014 and has grown by 49.68% since 2000. The house value growth rate is higher than the state average rate of 34.33% and is higher 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 Libertyville is much better than the state average in quality. The Libertyville area code is 847.