Philomath is located in west Oregon. Philomath is part of Benton County. Philomath has 1.86 square miles of land area and 0.19 square miles of water area. As of 2010-2014, the total Philomath population is 4,577, which has grown 19.25% 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%. Philomath median household income is $55,176 in 2010-2014 and has grown by 33.08% since 2000. The income growth rate is higher than the state average rate of 23.47% and is higher than the national average rate of 27.36%. Philomath median house value is $191,800 in 2010-2014 and has grown by 40.93% since 2000. The house value growth rate is lower than the state average rate of 53.91% and is lower 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 Philomath is better than the state average in quality. The Philomath area code is 541.