Columbia County
Columbia county is located in southeast Washington. Columbia county has 868.63 square miles of land area and 4.85 square miles of water area. As of 2010-2014, the total Columbia county population is 4,031, which has shrunk 0.81% since 2000. The population growth rate is much lower than the state average rate of 17.05% and is much lower than the national average rate of 11.61%. Columbia county median household income is $41,071 in 2010-2014 and has grown by 22.60% since 2000. The income growth rate is lower than the state average rate of 31.72% and is lower than the national average rate of 27.36%. Columbia county median house value is $147,800 in 2010-2014 and has grown by 73.88% since 2000. The house value growth rate is higher than the state average rate of 52.82% and is much 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 Columbia county is better than the state average in quality. The Columbia county area code is 509.
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