West Linn is a city in Clackamas County, Oregon, United States. Now a prosperous southern suburb of Portland, West Linn has a history of early development, prompted by the opportunity to harvest energy from the Willamette Falls. It was named after Senator Dr. Lewis Fields Linn of Ste. Genevieve, Missouri, who had advocated the American occupation of Oregon as a counterclaim to the British. As of the 2000 census, the city had a population of 22,261. The 2006 estimate is 24,180 residents.