Waukesha County, Wisconsin
Waukesha County, Wisconsin | |
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Waukesha County Courthouse | |
| Motto: "Leading the way!" | |
Map of Wisconsin showing Waukesha County | |
Wisconsin's location in the contiguous United States | |
| Country | United States |
| State | Wisconsin |
| Incorporated | 1846 |
| County seat | Waukesha |
| Largest city | Waukesha |
| Area | |
• Total | 581 sq mi (1,500 km2) |
| • Land | 550 sq mi (1,400 km2) |
| • Water | 31 sq mi (80 km2) |
| Population (2020) | |
• Total | 406,978 |
• Estimate (2023) | 412,591 |
| • Rank | 3rd largest county in Wisconsin |
| • Density | 700/sq mi (270/km2) |
| Time zone | UTC−6 (Central) |
| • Summer (DST) | UTC−5 (Central) |
| Area codes | 262, 414 |
| Congressional districts | 5th |
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| Airports | Waukesha County Airport Capitol Airport |
| Website | www |
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. Its county seat and largest city is Waukesha.
Waukesha County is included in the Milwaukee metropolitan area.