Columbia Bank Address: 200 Main St E, Monmouth, OR 97361 Phone: (503) 838-0601 Hours: Mon: 9am-5pm Tue: 9am-5pm Wed: 9am-5pm Thu: 9am-5pm Fri: 9am-5pm Banks Other Businesses: Washington Federal at 523 Main St E, Monmouth, OR 97361 OSU Federal, Your Community Credit Union at 464 Pacific Ave S, Monmouth, OR 97361 US Bank at 250 Main St E, Monmouth, OR 97361 US Bank at 250 Main St E, Monmouth, OR 97361