Marion County, Oregon

county in Oregon, United States

Marion County is a county located in the U.S. state of Oregon. The population was 345,920 at the 2020 census.[1] It is the fifth-most populous county in Oregon. The county seat is Salem.[2]

Marion County
Marion County Courthouse in Salem
Marion County Courthouse in Salem
Map of Oregon highlighting Marion County
Location within the U.S. state of Oregon
Map of the United States highlighting Oregon
Oregon's location within the U.S.
Coordinates: 44°55′N 122°35′W / 44.91°N 122.58°W / 44.91; -122.58
Country United States
State Oregon
FoundedJuly 5, 1843
Named forFrancis Marion
SeatSalem
Largest citySalem
Area
 • Total1,194 sq mi (3,090 km2)
 • Land1,184 sq mi (3,070 km2)
 • Water10 sq mi (30 km2)  0.85%
Population
 (2020)
 • Total345,920
 • Density267/sq mi (103/km2)
Time zoneUTC−8 (Pacific)
 • Summer (DST)UTC−7 (PDT)
Congressional districts5th, 6th
Websitewww.co.marion.or.us

References

change
  1. "QuickFacts: Marion County, Oregon". United States Census Bureau. Retrieved January 20, 2024.
  2. "Find a County". National Association of Counties. Retrieved June 7, 2011.