Johnson county is located close to the center of Georgia. Johnson county has 303.01 square miles of land area and 3.58 square miles of water area. As of 2010-2014, the total Johnson county population is 9,850, which has grown 15.07% since 2000. The population growth rate is much lower than the state average rate of 21.03% and is higher than the national average rate of 11.61%. Johnson county median household income is $36,466 in 2010-2014 and has grown by 52.91% since 2000. The income growth rate is much higher than the state average rate of 16.28% and is much higher than the national average rate of 27.36%. Johnson county median house value is $66,500 in 2010-2014 and has grown by 38.54% since 2000. The house value growth rate is higher than the state average rate of 33.09% 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 Johnson county is worse than the state average in quality. The Johnson county area code is 478.
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