Philomath is a city in Benton County, Oregon, United States. It was named for Philomath College. The population was 5,838 as of the 2023 census population estimates. It is part of the Corvallis Metrop

Benton County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 95,184. Its county seat is Corvallis. The county was named after Thomas Hart Benton, a U.