| Benton County Oregon Cities/Towns - Corvallis (County Seat), Monroe, North Albany, Philomath |
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Your Ad Here Benton County is a county located in the U.S. state of Oregon. In 2000, the county's population was 78,153. Its county seat is Corvallis. History The county was named after Thomas Hart Benton, a U.S. senator who advocated U.S. control over the Oregon Country. ![]() |