Washington county is located in northwest Oregon. Washington county has 724.23 square miles of land area and 2.19 square miles of water area. As of 2010-2014, the total Washington county population is 547,451, which has grown 22.93% since 2000. The population growth rate is much higher than the state average rate of 14.00% and is much higher than the national average rate of 11.61%. Washington county median household income is $65,272 in 2010-2014 and has grown by 25.23% since 2000. The income growth rate is higher than the state average rate of 23.47% and is lower than the national average rate of 27.36%. Washington county median house value is $279,100 in 2010-2014 and has grown by 51.03% since 2000. The house value growth rate is lower than the state average rate of 53.91% and is 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 Washington county is much better than the state average in quality. The Washington county area codes are 503, 971.
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