Clatsop County


wrecked ship at Fort Stevens State Park
The shipwreck of the Peter Iredale on the beach at Fort Stevens State Park. (Oregon State Archives Scenic Image 20150928-7165​)
County Seat: 800 Exchange St., Suite 410, Astoria 97103
Phone: 503-325-1000 (General); 503-325-8555 (Court Administrator)
Fax: 503-325-8325


Established: June 22, 1844
Elev. at Astoria: 19'
Area: 1085 sq. mi.
Average Temp.: January 41.9° July 60.1°
Assessed Value: $7,084,305,859
Real Market Value: $11,702,910,802
(includes the value of non-taxed properties)
Annual Precipitation: 66.40"
Economy: Fishing, tourism and forest products

Related Resources

Oregon county map with Clatsop County shaded
"County QuickFacts" (population and economic data from U.S. Census Bureau)
County Seat Map​ (from Google Maps)

Incorporated Cities

Points of Interest

Astoria Column, Port of Astoria, Flavel Mansion Museum, Lewis and Clark Expedition Salt Cairn, Fort Clatsop, Fort Stevens, Columbia River Maritime Museum

History and General Information 

Clatsop County was created from the original Tuality District in 1844 and named for the Clatsop Tribe, one of the many Chinook tribes living in Oregon. The Journals of Lewis and Clark mention the tribe. Fort Clatsop, Lewis and Clark’s winter headquarters in 1805 and now a national memorial near the mouth of the Columbia River, also took the tribe’s name.

Astoria, Oregon’s oldest city, was established as a fur trading post in 1811 and named after John Jacob Astor. The first U.S. Post Office west of the Rocky Mountains was also established in Astoria in 1847. The first county courthouse was completed in 1855, and the present courthouse was erected in 1904. Records show that the summer resort of Seaside was founded by Ben Holladay, pioneer Oregon railroad builder, in the early 1870s when he constructed the Seaside House, a famous luxury hotel for which the city was finally named. The Lewis and Clark Expedition reached the Pacific Ocean at this spot.

County Officials

Commissioners—Chair Mark Kujala 2027; Courtney Bangs 2025, John Toyooka 2025, Lianne Thompson 2027, Pamela Wev 2027; Dist. Atty. Ron L. Brown 2027; Assess. Suzanne Johnson; Clerk Tracie Krevanko; Sheriff Matt Phillips 2025; Surv. Vance Swenson; Treas. Jennifer Carlson; County Manager Don Bohn