Jefferson County | |
|---|---|
 Jefferson County Courthouse in Madras | |
 Location within the U.S. state of Oregon | |
 Oregon's location within the U.S. | |
| Coordinates: 44°38′N 121°10′W / 44.63°N 121.17°W | |
| Country |  United States |
| State |  Oregon |
| Founded | December 12, 1914 |
| Named for | Mount Jefferson |
| Seat | Madras |
| Largest city | Madras |
| Area | |
• Total | 1,791 sq mi (4,640 km2) |
| • Land | 1,781 sq mi (4,610 km2) |
| • Water | 10 sq mi (30 km2) 0.6% |
| Population (2020) | |
• Total | 24,502 |
• Estimate (2023) | 25,454  |
| • Density | 12/sq mi (5/km2) |
| Time zone | UTC−8 (Pacific) |
| • Summer (DST) | UTC−7 (PDT) |
| Congressional districts | 2nd, 5th |
| Website | www |
Jefferson County is one of the 36 counties in the U.S. state of Oregon. At the 2020 census, the population was 24,502.[1] The county seat is Madras.[2] The county is named after Mount Jefferson, the second tallest mountain in Oregon.[3]
- ^ "State & County QuickFacts". United States Census Bureau. Retrieved May 20, 2023.
- ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.
- ^ McArthur, Lewis A.; McArthur, Lewis L. (2003) [1928]. Oregon Geographic Names (7th ed.). Portland, Oregon: Oregon Historical Society Press. p. 509. ISBN 978-0875952772.