Napavine is located in west Washington. Napavine is part of Lewis County. Napavine has 2.38 square miles of land area and 0.01 square miles of water area. As of 2010-2014, the total Napavine population is 1,660, which has grown 21.97% since 2000. The population growth rate is higher than the state average rate of 17.05% and is much higher than the national average rate of 11.61%. Napavine median household income is $49,286 in 2010-2014 and has grown by 20.31% since 2000. The income growth rate is much lower than the state average rate of 31.72% and is lower than the national average rate of 27.36%. Napavine median house value is $165,100 in 2010-2014 and has grown by 50.36% since 2000. The house value growth rate is about the same as the state average rate of 52.82% 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 Napavine is much better than the state average in quality. The Napavine area code is 360.