County ProfileWI
Waukesha County
Population: 406,978 · 31 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
406,978
People
Median age
43.5
Housing
Total households
168,658
Income
Median household income
$106,076
Housing
Total housing units
175,591
Employment
Employment rate
65%
Education
Bachelor’s degree or higher
48.9%
Healthcare
Insured population
96.9%
County details
Local time 01:22:20(CT)| Name | Waukesha |
|---|---|
| Total ZIP codes | 31total |
| ZIP codes (by type) | 25 Standard6 PO Box |
| Area code | 262, 274, 414, 920 |
| Timezone | Central Time (CT) |
| Coordinates | 43.0183677, -88.3042404 |
| Land area | 549.7 sq miles(1,423.8 km²) |
Map of Waukesha county, Wisconsin with ZIP codes
Cities and Communities in Waukesha County
Compare the largest cities in Waukesha County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Waukesha | 71,158 | $83,837 | 4ZIPs |
| Brookfield | 41,464 | $129,548 | 3ZIPs |
| New Berlin | 40,451 | $101,091 | 2ZIPs |
| Menomonee Falls | 38,527 | $100,238 | 2ZIPs |
| Muskego | 25,032 | $112,221 | 1ZIPs |
| Oconomowoc | 18,203 | $106,425 | 1ZIPs |
| Pewaukee | 15,914 | $108,350 | 1ZIPs |
| Sussex | 11,487 | $119,041 | 1ZIPs |
| Hartland | 9,501 | $87,754 | 1ZIPs |
| Mukwonago | 8,262 | $98,273 | 1ZIPs |
| Delafield | 7,185 | $94,806 | 1ZIPs |
| Elm Grove | 6,513 | $158,016 | 1ZIPs |
| Merton | 3,441 | $173,913 | 1ZIPs |
| Wales | 2,862 | $109,024 | 1ZIPs |
| Dousman | 2,419 | $96,513 | 1ZIPs |
| North Prairie | 2,202 | $152,798 | 1ZIPs |
| Eagle | 2,071 | $112,083 | 1ZIPs |
| Butler | 1,787 | $60,000 | 1ZIPs |
| Big Bend | 1,483 | $134,615 | 1ZIPs |
| Lannon | 1,355 | $83,889 | 1ZIPs |
| Nashotah | 1,321 | $148,403 | 1ZIPs |
| Okauchee | 732 | — | 1ZIPs |
| North Lake | 247 | $67,321 | 1ZIPs |
| Genesee Depot | 152 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Waukesha County
Review the most populated postal areas across Waukesha County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 53051 | Menomonee Falls | $100,031 | 38,562 |
| 53066 | Oconomowoc | $113,114 | 36,595 |
| 53188 | Waukesha | $92,409 | 35,552 |
| 53151 | New Berlin | $101,176 | 32,535 |
| 53186 | Waukesha | $74,588 | 32,332 |
| 53189 | Waukesha | $117,008 | 26,846 |
| 53072 | Pewaukee | $98,538 | 26,687 |
| 53150 | Muskego | $109,276 | 25,804 |
| 53045 | Brookfield | $123,750 | 23,651 |
| 53005 | Brookfield | $126,739 | 21,433 |
| 53029 | Hartland | $108,152 | 21,239 |
| 53089 | Sussex | $120,875 | 19,657 |
| 53149 | Mukwonago | $110,608 | 19,644 |
| 53146 | New Berlin | $110,035 | 7,677 |
| 53018 | Delafield | $124,595 | 7,396 |
| 53118 | Dousman | $108,772 | 7,085 |
| 53122 | Elm Grove | $157,962 | 6,578 |
| 53119 | Eagle | $117,759 | 5,751 |
| 53103 | Big Bend | $137,083 | 3,833 |
| 53058 | Nashotah | $104,444 | 3,340 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS