Astoria is a port city and the seat of Clatsop County, Oregon, United States. Founded in 1811, Astoria is the oldest city in the state of Oregon and was the first American settlement west of the Rocky Mountains. The county is the northwest corner of Oregon, and Astoria is located on the south shore of the Columbia River, where the river flows into the Pacific Ocean. The city is named for John Jacob Astor, an investor and entrepreneur from New York City, whose American Fur Company founded Fort Astoria at the site and established a monopoly in the fur trade in the early nineteenth century. Astoria was incorporated by the Oregon Legislative Assembly on October 20, 1876.
The city is served by the deepwater Port of Astoria. Transportation includes the Astoria Regional Airport. U.S. Route 30 and U.S. Route 101 are the main highways, and the 4.1-mile (6.6 km) Astoria–Megler Bridge connects to neighboring Washington across the river. The population was 9,477 at the 2010 census.
The Lewis and Clark Expedition spent the winter of 1805–1806 at Fort Clatsop, a small log structure southwest of modern-day Astoria. The expedition had hoped a ship would come by that could take them back east, but instead they endured a torturous winter of rain and cold. They later returned overland and by internal rivers, the way they had traveled west.