Polk County
Also known as Polk County, Oregon, Polk County, OR
county in Oregon, United States
Key facts
- Country
- United States
- State
- Oregon
- Founded
- December 22, 1845
- Named after
- James K. Polk
- Seat
- Dallas
- Largest city
- Salem (portion)
- Total
- 744 sq mi (1,930 km )
- Land
- 741 sq mi (1,920 km )
- Water
- 3.1 sq mi (8.0 km ) 0.4%
- Estimate 2025
- 90,037
- Density
- 118/sq mi (46/km )
- Time zone
- UTC−8 ( Pacific )
- Summer dst
- UTC−7 ( PDT )
~9 min read
Article
Map of Polk County
Polk County is one of the 36 counties in the U.S. state of Oregon. As of the 2020 census, the population was 87,433. The county seat is Dallas. The county is named for James Knox Polk, the 11th president of the United States.