Union county is located in south Illinois. Union county has 413.46 square miles of land area and 8.69 square miles of water area. As of 2010-2014, the total Union county population is 17,620, which has shrunk 3.68% 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%. Union county median household income is $41,849 in 2010-2014 and has grown by 35.02% 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%. Union county median house value is $88,400 in 2010-2014 and has grown by 47.58% 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 Union county is worse than the state average in quality. The Union county area code is 618.
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