county in Oregon, United States From Wikipedia, the free encyclopedia
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 | |
---|---|
Coordinates: 44°55′N 122°35′W | |
Country | United States |
State | Oregon |
Founded | July 5, 1843 |
Named for | Francis Marion |
Seat | Salem |
Largest city | Salem |
Area | |
• Total | 1,194 sq mi (3,090 km2) |
• Land | 1,184 sq mi (3,070 km2) |
• Water | 10 sq mi (30 km2) 0.85% |
Population (2020) | |
• Total | 345,920 |
• Density | 267/sq mi (103/km2) |
Time zone | UTC−8 (Pacific) |
• Summer (DST) | UTC−7 (PDT) |
Congressional districts | 5th, 6th |
Website | www |
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