Kennewick is located in southeast Washington. Kennewick is part of Benton County. Kennewick has 26.93 square miles of land area and 1.43 square miles of water area. As of 2010-2014, the total Kennewick population is 75,971, which has grown 38.90% since 2000. The population growth rate is much higher than the state average rate of 17.05% and is much higher than the national average rate of 11.61%. Kennewick median household income is $51,739 in 2010-2014 and has grown by 25.54% 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%. Kennewick median house value is $168,200 in 2010-2014 and has grown by 48.19% since 2000. The house value growth rate is lower than the state average rate of 52.82% 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 Kennewick is better than the state average in quality. The Kennewick area code is 509.