Many of the County Links on the left will keep you specifically in or near Columbia County here in Oregon. We add new listings and links on a regular basis so bookmark this page and check back often. Columbia County, named for the Columbia River, is bounded on the north and east by the Columbia River, on the west by Clatsop County, and on the south by Washington and Multnomah Counties. Columbia County was the sixteenth county created in Oregon and is the third smallest county in Oregon after Multnomah and Hood River Counties. The primary industries of Columbia County are timber, fishing, water transportation, dairying, horticulture, and recreation. The Banks-Vernonia State Trail, traversing part of Columbia County, was the first "rails-to-trails" state park built in Oregon. It was developed on an abandoned railroad bed stretching between Banks, in Washington County, and Vernonia. The trail covers 21 miles and features 12 bridges. The gentle grade allows hikers, bicyclists, equestrians and people of all abilities to enjoy the scenic Coast Range mountains, fields and forests.