Clark county is located in southeast Illinois. Clark county has 501.42 square miles of land area and 3.40 square miles of water area. As of 2010-2014, the total Clark county population is 16,240, which has shrunk 4.52% 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%. Clark county median household income is $50,412 in 2010-2014 and has grown by 40.16% 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%. Clark county median house value is $88,100 in 2010-2014 and has grown by 39.18% since 2000. The house value growth rate is higher than the state average rate of 34.33% and is 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 Clark county is better than the state average in quality. The Clark county area code is 217.
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