Hartline is located in east Washington. Hartline is part of Grant County. Hartline has 0.33 square miles of land area and has no water area. As of 2010-2014, the total Hartline population is 106, which has shrunk 20.90% 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%. Hartline median household income is $36,875 in 2010-2014 and has grown by 32.09% since 2000. The income growth rate is about the same as the state average rate of 31.72% and is higher than the national average rate of 27.36%. Hartline median house value is $108,300 in 2010-2014 and has grown by 123.30% since 2000. The house value growth rate is much 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 Hartline is better than the state average in quality. The Hartline area code is 509.