Westport is an unincorporated community and census-designated place on the Columbia River in Clatsop County, Oregon, United States. As of the 2010 census, it had a population of 321. Westport is connected to Cathlamet, Washington, across the river via the Wahkiakum County ferry to Puget Island. U.S. Route 30 passes through the community, connecting it to Astoria to the west and Clatskanie to the east.