Waukesha County, Wisconsin
Waukesha County is a county in Wisconsin. Its county FIPS code is 55133. Use the boundary map and neighboring areas below to check the jurisdiction you need.
- Official code
- 55133
- Representative coordinates
- 43.018368, -88.304240
- County type
- County
- County seat or government
- Waukesha
- Resident population, July 2025
- 417,210
- Land area
- 1,423.787 km²
- Water area
- 79.8 km²
- State
- Wisconsin
The representative point identifies this area. It is not a street address or a boundary survey.
Time zones in Waukesha County
| Time zone | Local time and UTC offset | Next clock change |
|---|---|---|
| America/Chicago | UTC-06:00 in January; UTC-05:00 in July. Enable JavaScript for the live clock. | Enable JavaScript for upcoming changes. |
Listed zones overlap the mapped area. A point lookup can distinguish sides of a boundary. Your device’s zone may differ.
Census ZIP areas
53005 · 53007 · 53017 · 53018 · 53029 · 53036 · 53045 · 53046 · 53051 · 53058 · 53066 · 53069 · 53072 · 53089 · 53103 · 53118 · 53119 · 53122 · 53127 · 53146 · 53149 · 53150 · 53151 · 53153 · 53183 · 53185 · 53186 · 53188 · 53189 · 53225 · 53227
These statistical areas overlap the boundary. They are not delivery assignments; confirm mailing details with USPS ZIP Code Lookup.
Official county information
Use the US government local-office directory ↗ to find the office responsible for your address. A county website has not been confidently matched here. A geographic lookup cannot determine eligibility, tax liability or a court obligation.
Cities, towns and communities
These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.
- Big Bend village, WI
- Brookfield city, WI
- Butler village, WI
- Chenequa village, WI
- Delafield city, WI
- Dousman village, WI
- Eagle village, WI
- Elm Grove village, WI
- Hartland village, WI
- Lac La Belle village, WI
- Lannon village, WI
- Lisbon village, WI
- Menomonee Falls village, WI
- Merton village, WI
- Milwaukee city, WI
- Mukwonago village, WI
- Muskego city, WI
- Nashotah village, WI
- New Berlin city, WI
- North Lake CDP, WI
- North Prairie village, WI
- Oconomowoc city, WI
- Oconomowoc Lake village, WI
- Okauchee Lake CDP, WI
- Pewaukee city, WI
- Pewaukee village, WI
- Summit village, WI
- Sussex village, WI
- Vernon village, WI
- Wales village, WI
Browse all cities, towns and communities for Waukesha County
Areas sharing the mapped boundary
These areas touch this mapped boundary.
Before using this answer on a form
Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.
Find the county at your current point, check its ZIP area, or find its physical time zone.