Some of the cities, towns, and places in Columbia County are Alston, Apiary, Beaver Homes, Beaver Springs, Birkenfeld, Canaan, Chapman, Clatskanie, Clatskanie Heights, Clear Creek, Columbia City, Corey Hill, Deer Island, Delena, Goble, Goble, Oregon, Inglis, Keasey, Kerry, Lindbergh, Marshland, Mayger, McNulty, Mist, Pittsburg, Prescott, Quincy, Rainier, Reuben, Riverside, Scappoose, South Scappoose, Spitzenberg, St. Helens, Trenholm, Vernonia, Warren, West Saint Helens, Woodson, Yankton
Columbia County is one of the 36 counties in the U.S. state of Oregon. As of the 2010 census, the population was 49,351. The county seat is St. Helens. It was named for the Columbia River, which forms its eastern and northern borders.
Columbia County is part of the Portland-Vancouver-Hillsboro, OR-WA Portland metropolitan area and is located in Northwest Oregon.