Jefferson County, Wisconsin
Jefferson County, Wisconsin | |
|---|---|
Jefferson County Courthouse | |
Location within the U.S. state of Wisconsin | |
| Coordinates: 43°01′N 88°47′W / 43.02°N 88.78°W | |
| Country | United States |
| State | Wisconsin |
| Founded | 1839 |
| Named after | 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 (67 km2) 4.5% |
| Population (2020) | |
• Total | 84,900 |
• Estimate (2024) | 86,245 |
| • Density | 153/sq mi (59.0/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. Its county seat is Jefferson. Jefferson County comprises the Watertown-Fort Atkinson, WI Micropolitan Statistical Area, which is also included in the Milwaukee-Racine-Waukesha, WI Combined Statistical Area.