Map of Jefferson County, Wisconsin

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.

Jefferson County overview:
Name:	Jefferson County
FIPS code:	55-055
State:	Wisconsin
Founded:	1839
Named for:	Jefferson County, New York
Seat:	Jefferson
Largest city:	Watertown
Total Area:	583 sq mi (1,510 km²)
Land Area:	556 sq mi (1,440 km²)
Total Population:	84,900
Population Density:	152.6/sq mi (58.9/km²)

Jefferson County location map. Where is Jefferson County?

Jefferson County location on the U.S. Map. Where is Jefferson County. — Location of Jefferson County in the the United States.

Jefferson County location on the Wisconsin map. Where is Jefferson County. — Location of Jefferson County in Wisconsin.

History

Jefferson County was created in 1836 as part of Wisconsin Territory and was organized in 1839. Jefferson County was founded by “Yankee” settlers from New England. It was named after Jefferson County, New York, where some of the original settlers came from. The town of Watertown, Wisconsin, was named after Watertown, New York, in Jefferson County, New York.

Jefferson County Road Map

Jefferson CountyStreet Map. — Street map of Jefferson County, Wisconsin. Source: OpenStreetMap (OSM)

Geography

According to the U.S. Census Bureau, the county has an area of 583 square miles (1,510 km), of which 556 square miles (1,440 km) is land and 26 square miles (67 km) (4.5%) is water.

Major highways

Railroads

Canadian Pacific
Union Pacific
Wisconsin and Southern Railroad

Buses

List of intercity bus stops in Wisconsin

Airports

Watertown Municipal Airport (KRYV) provides services for the county and surrounding communities.
Fort Atkinson Municipal Airport (61C), enhances county service.