Jefferson County | |
|---|---|
 Jefferson County courthouse | |
 Location within the U.S. state of Wisconsin | |
 Wisconsin's location within the U.S. | |
| Coordinates: 43°01′N 88°47′W / 43.02°N 88.78°W | |
| Country |  United States |
| State |  Wisconsin |
| Founded | 1839 |
| Named for | Thomas Jefferson |
| Seat | Jefferson |
| Largest city | Watertown |
| Area | |
• Total | 583 sq mi (1,510 km2) |
| • Land | 556 sq mi (1,440 km2) |
| • Water | 26 sq mi (70 km2) 4.5% |
| Population | |
• Total | 84,900 |
• Estimate (2023) | 85,743  |
| • Density | 150/sq mi (56/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (CDT) |
| Congressional district | 5th |
| Website | www |
Jefferson County is a county in the U.S. state of Wisconsin. As of the 2020 census, the population was 84,900.[1] Its county seat is Jefferson.[2] Jefferson County comprises the Watertown-Fort Atkinson, WI Micropolitan Statistical Area, which is also included in the Milwaukee-Racine-Waukesha, WI Combined Statistical Area.
- ^ a b Cite error: The named reference
2020-census-55055was invoked but never defined (see the help page). - ^ "Find a County". National Association of Counties. Archived from the original on May 31, 2011. Retrieved June 7, 2011.