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Home > Local > Counties > Marion County

Marion County

Evening at the State Capitol with the 75th Anniversary lighting on the Capitol Mall in Salem.

Evening at the State Capitol with the 75th Anniversary lighting on the Capitol Mall in Salem. (Oregon State Archives Photo)

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County Seat: 100 High St. NE, Salem 97301
Phone: 503-588-5225 (General); 503-588-5105 (Court Administrator)
Fax: 503-373-4408


Population (2016): 333,950
Established: July 5, 1843
Elev. at Salem: 154'
Area: 1,194 sq. mi.
Average Temp.: January 39.3° July 66.3°
Assessed Value: $23,371,520,094
Real Market Value: $39,002,299,869
Annual Precipitation: 40.35"
Economy: Government, agriculture, food processing, forest products, manufacturing, education and tourism


Marion 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
Aumsville | Aurora | Detroit | Donald | Gates | Gervais | Hubbard | Idanha | Jefferson | Keizer | Mill City | Mt. Angel | Salem | Scotts Mills | Silverton | St. Paul | Stayton | Sublimity | Turner | Woodburn


Points of interest
tate Capitol, Champoeg State Park, Silver Falls State Park, The Oregon Garden, Wheatland Ferry, Buena Vista Ferry, Detroit Dam and Santiam River, Breitenbush Hot Springs, Mount Angel Abbey, food processing plants, Willamette University, Chemeketa Community College, Willamette Heritage Center and Mission Mill Museum Village, Bush House, Deepwood House and the Gilbert House Children’s Museum


History and general information
Marion County, then called Champooick, was created by the Provisional Government in 1843, 16 years before Oregon gained statehood. In 1849, the name was changed to Marion in honor of General Francis Marion.

The county, located in the heart of the Willamette Valley, has the Willamette River as its western boundary and the Cascade Range on the east. Salem, the county seat, is one of the valley’s oldest cities. Among its public buildings are the Marion County Courthouse, State Capitol, Capitol Mall buildings and Salem Civic Center. The county was presided over by the Marion County Court until January 1, 1963, when the court was abolished and replaced by a Board of Commissioners.


County officials
Commissioners—Chair Sam Brentano 2021, Janet Carlson 2019, Kevin Cameron 2019; Dist. Atty. Walter Beglau 2019; Assess. Tom Rohlfing 2021; Clerk Bill Burgess 2021; Justice of the Peace Janice D. Zyryanoff 2019; Sheriff Jason Myers 2019; Surv. Mark Riggins; Treas. Laurie Steele 2019; Co. Admin. John Lattimer


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