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Home > Local > Counties > Clatsop County

Clatsop County

The Astoria Riverfront Trolley in front of the Columbia River Maritime Museum.

The Astoria Riverfront Trolley in front of the Columbia River Maritime Museum. (Oregon State Archives Photo)

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County Seat: 820 Exchange St., Suite 410, Astoria 97103
Phone: 503-325-1000 (General); 503-325-8555 (Court Administrator)
Fax: 503-325-8325


Population (2016): 38,225
Established: June 22, 1844
Elev. at Astoria: 19'
Area: 1085 sq. mi.
Average Temp.: January 41.9° July 60.1°
Assessed Value: $5,875,464,334
Real Market Value: $8,351,583,284
Annual Precipitation: 66.40"
Economy: Fishing, tourism and forest products


Clatsop County map

Related resources
Historical Records Inventory
Scenic Image
"County QuickFacts" (population and economic data from U.S. Census Bureau)
County Seat Map (from Yahoo! Maps)
County Map (from ODOT)


Incorporated cities
Astoria | Cannon Beach | Gearhart | Seaside | Warrenton


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. 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 Scott Lee 2019, Sarah Nebeker 2021, Kathleen Sullivan 2021, Lisa Tarabochia-Clement 2019, Lianne Thompson 2019; Dist. Atty. Joshua Marquis 2019; Assess. Suzanne Johnson; Clerk Valerie Crafard; Sheriff Thomas J. Bergin 2021; Surv. Vance Swenson; Treas. Monica Steele; County Manager Cameron Moore


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