Columbia County is a county located in the U.S. state of Oregon. As of 2000, its population was 43,560. The county seat is St. Helens.
History
It was named for the Columbia River, which forms its eastern and northern borders.
| Columbia County Oregon Cities/Towns - Clatskanie, Columbia City, Deer Island, Goble, Marshland, Milton, Mist, Prescott, Rainier, Scappoose, St. Helens (County Seat), Vernonia, Warren |
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Your Ad Here Columbia County is a county located in the U.S. state of Oregon. As of 2000, its population was 43,560. The county seat is St. Helens. History It was named for the Columbia River, which forms its eastern and northern borders. |