Waukesha County Welcome Sign

Waukesha County 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 …
Waukesha County 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.
  • Country: United States
  • State: Wisconsin
  • Incorporated: 1846
  • County seat: Waukesha
  • Largest city: Waukesha
  • Area codes: 262, 414
  • Congressional districts: 5th

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Data from: en.wikipedia.org