Sutherlin is a city in Douglas County, Oregon, United States. As of the 2010 Census, the population was 7,810, making it the second most populous city in Douglas County. Located just off of Interstate 5, nearby features include Cooper Creek Reservoir, Ford's Pond, the Umpqua River, a golf course, and numerous vineyards. The City of Sutherlin Police Department also serves the City of Oakland via a paid contract.