city, Clackamas county, northwestern Oregon, U.S., on the Willamette River (and its western extension, 405-acre 【164-hectare】 Oswego Lake), just south of Portland. Ruins of the Willamette Iron Company's Oswego blast furnace (1867–93) recall the city's early iron industry based on Iron Mountain (now laid out as a golf course). Settled in the 1850s on the site of a Clackamas Indian encampment, it was called Oswego (later renamed Lake Oswego) and serves mainly as a residential suburb of Portland. Many of its older neighbourhoods are built in the Tudor Revival and English Cottage styles popular in the 1920s. Marylhurst University, founded in 1893 as a Roman Catholic women's college—Saint Mary's Academy and College—in downtown Portland, was renamed and moved to its present location just south of the city in 1930. Inc. 1910. Pop. (1970) 14,573; (1990) 30,576; (2000) 35,278.