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.

Cannon Beach is a city in Clatsop County, Oregon, United States. The population was 1,690 at the 2010 census. Cannon Beach is a popular coastal tourist destination in Oregon, famous for Haystack Rock, a 235 ft (72 m) sea stack that juts out along the Pacific Coast. In 2013, National Geographic listed Cannon Beach as "one of the world’s 100 most beautiful places."

Grays Harbor County is a county in the U.S. state of Washington. As of the 2010 census, the population was 72,797. Its county seat is Montesano, and its largest city is Aberdeen. Grays Harbor County is included in the Aberdeen Micropolitan Statistical Area.

The city of Tillamook is the county seat of Tillamook County, Oregon, United States. The city is located on the southeast end of Tillamook Bay on the Pacific Ocean. The population was 5,231 at the 2020 census.