West Linn is a city in Clackamas County, Oregon, United States. Now a southern suburb within the Portland metropolitan area, West Linn has a history of early development, prompted by the opportunity to harvest energy from nearby Willamette Falls. It was named after U.S. Senator Lewis F. Linn of Ste. Genevieve, Missouri, who had advocated the American occupation of Oregon as a counterclaim to the British. As of the 2010 census, the city had a population of 25,109.