Philomath ( fi-LOH-məth) is a city in Benton County, Oregon, United States. It was named for Philomath (Greek, "love of learning") College. The population was 4,584 at the 2010 census and was most recently estimated in 2019 to have a population of 5,666. It is part of the Corvallis, Oregon, Metropolitan Statistical Area.
Philomath was named after the Philomath College that was founded in 1867 by the United Brethren Church. The name of the college and city was derived from two Greek words meaning "lover of learning". The city was incorporated on October 20, 1882. The college closed in 1929 due to a dramatic decline in enrollment.
Philomath is 5 miles (8 km) west of Corvallis on U.S. Route 20.
According to the United States Census Bureau, the city has a total area of 2.05 square miles (5.31 km2), of which 1.86 square miles (4.82 km2) is land and 0.19 square miles (0.49 km2) is water.
This region experiences warm (but not hot) and dry summers, with no average monthly temperatures above 71.6 °F (22.0 °C). According to the Köppen Climate Classification system, Philomath has a warm-summer Mediterranean climate, abbreviated "Csb" on climate maps.
As of the census of 2010, there were 4,584 people, 1,733 households, and 1,203 families living in the city.