The Port of Columbia County is a special district created in 1940 to promote economic development opportunities in the Port District, primarily through the lease and development of industrial property. The boundaries of the Port District span 51 miles along the Columbia River and includes the cities of Scappoose, St. Helens, Columbia City, Rainier, and Clatskanie. The Port owns 8 industrial properties, including sites with excellent highway, rail, airport, and maritime access. The Port also owns and manages recreational properties at Scappoose Airport, Scappoose Bay Marine Park, and Bayport RV Park & Campground.