1The largest city in Maine, on Casco Bay off the Atlantic Ocean, in the southwestern part of the state; population 62,561 (est. 2008).
2An industrial port in northwestern Oregon, on the Willamette River near its confluence with the Columbia River; population 557,706 (est. 2008). The largest city in Oregon, it was founded in 1845 and developed as a supply center for the gold rushes of the 1860s and 1870s and as a port for the lumber trade.