Waukesha County, Wisconsin

Waukesha County, Wisconsin
Waukesha County Courthouse
Waukesha County Courthouse
Flag of Waukesha County, Wisconsin
Official seal of Waukesha County, Wisconsin
Motto: 
"Leading the way!"
Map of Wisconsin showing Waukesha County
Map of Wisconsin showing Waukesha County
Wisconsin's location in the contiguous United States
Wisconsin's location in the contiguous United States
Country United States
State Wisconsin
Incorporated1846
County seatWaukesha
Largest cityWaukesha
Area
 • Total581 sq mi (1,500 km2)
 • Land550 sq mi (1,400 km2)
 • Water31 sq mi (80 km2)
Population
 • Total406,978
 • Estimate 
(2023)
412,591 Increase
 • Rank3rd largest county in Wisconsin
 • Density740.3/sq mi (285.8/km2)
Time zoneUTC−6 (Central)
 • Summer (DST)UTC−5 (Central)
Area codes262, 414
Congressional districts1st, 5th
Interstates
U.S. Routeslink = U.S. Route 18 in Wisconsin link = U.S. Route 41 in Wisconsin link = U.S. Route 45 in Wisconsin
State Routeslink = Wisconsin Highway 16 link = Wisconsin Highway 36 link = Wisconsin Highway 59 link = Wisconsin Highway 67 link = Wisconsin Highway 83 link = Wisconsin Highway 100
AirportsWaukesha County Airport Capitol Airport
Websitewww.waukeshacounty.gov
Waukesha County sign on WIS 59

Waukesha County (/ˈwɔːkɪʃɔː/) is a county in the U.S. state of Wisconsin. As of the 2020 United States Census, the population was 406,978, making it the third-most populous county in Wisconsin. Its median income of $88,985 placed it as the only county in Wisconsin on the list of the 100 highest-income counties in the U.S. by median income as of 2020.[2] Its county seat and largest city is Waukesha.[3]

Waukesha County is included in the MilwaukeeWaukeshaWest Allis, WI Metropolitan Statistical Area.

  1. ^ "QuickFacts: Waukesha County, Wisconsin". www.census.gov. U.S. Census Bureau. Retrieved July 2, 2022.
  2. ^ "QuickFacts". United States Census Bureau. Retrieved September 7, 2022.
  3. ^ "Find a County". National Association of Counties. Retrieved June 7, 2011.