| Waukesha County, Wisconsin | ||
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Waukesha County Courthouse
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Map of Wisconsin showing Waukesha County |
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Wisconsin's location in the United States |
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| Country |
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| State |
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| Region | Southeastern Wisconsin | |
| Metro area | Metro Milwaukee | |
| Incorporated | 1846 | |
| County seat | Waukesha, Wisconsin | |
| Largest city | Waukesha, Wisconsin | |
| Area | ||
| • Total | 581 sq mi (1,500 km2) | |
| • Land | 550 sq mi (1,400 km2) | |
| • Water | 31 sq mi (80 km2) | |
| Area rank | 53rd largest county in Wisconsin | |
| Population (2010) | ||
| • Total | 389,891 | |
| • Rank | 3rd largest county in Wisconsin | |
| • Density | 709/sq mi (274/km2) | |
| Time zone | Central (UTC-6) | |
| • Summer (DST) | Central (UTC-5) | |
| Area codes | 262, 414 | |
| Congressional districts | 1st, 5th | |
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| Airports | Waukesha County Airport Capitol Airport | |
| Website | Waukesha County Official Website | |