Henderson county is located in northwest Illinois. Henderson county has 378.87 square miles of land area and 16.35 square miles of water area. As of 2010, the total Henderson county population is 7,331, which has shrunk 10.74% since 2000. The population growth rate is much lower than the state average rate of 3.31% and is much lower than the national average rate of 9.71%. Henderson county median household income is $43,450 in 2006-2010 and has grown by 19.35% since 2000. The income growth rate is higher than the state average rate of 13.70% and is about the same as the national average rate of 19.17%. Henderson county median house value is $77,600 in 2006-2010 and has grown by 35.43% since 2000. The house value growth rate is lower than the state average rate of 46.64% and is lower than the national average rate of 50.42%. 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 Henderson county is worse than the state average in quality. The Henderson county area codes are 217, 309.
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