Champaign is located close to the center of Illinois. Champaign is part of Champaign County. Champaign has 22.43 square miles of land area and 0.03 square miles of water area. As of 2010-2014, the total Champaign population is 82,848, which has grown 22.71% since 2000. The population growth rate is much higher than the state average rate of 3.62% and is much higher than the national average rate of 11.61%. Champaign median household income is $42,077 in 2010-2014 and has grown by 28.30% 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%. Champaign median house value is $148,400 in 2010-2014 and has grown by 62.54% since 2000. The house value growth rate is much 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 Champaign is close to the state average in quality. The Champaign area code is 217.