Columbia County
County in Oregon
Columbia County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 52,589. The county seat is St. Helens. Wikipedia
Cities: St. Helens, Scappoose, Rainier, and more
County seat: St. Helens
Population: 53,588 (2022)
Congressional district: 1st
Named for: Columbia River