| ZIP Code | ZIP Code City/Town | ZIP Type | Average Adjusted Income(2020) |
|---|
| Brookfield | Standard | $124,130 |
| Butler | Standard | $53,220 |
| Colgate | Standard | $114,370 |
| Delafield | Standard | $142,260 |
| Hartland | Standard | $170,860 |
| Ixonia | Standard | $76,410 |
| Brookfield | Standard | $146,560 |
| Lannon | Standard | $73,220 |
| Menomonee Falls | Standard | $93,010 |
| Nashotah | Standard | $196,060 |
| Oconomowoc | Standard | $127,040 |
| Okauchee | Standard | $156,000 |
| Pewaukee | Standard | $128,140 |
| Sussex | Standard | $97,990 |
| Big Bend | Standard | $82,790 |
| Dousman | Standard | $117,850 |
| Eagle | Standard | $83,370 |
| Elm Grove | Standard | $227,020 |
| New Berlin | Standard | $110,260 |
| Mukwonago | Standard | $89,180 |
| Muskego | Standard | $96,830 |
| New Berlin | Standard | $88,070 |
| North Prairie | Standard | $88,130 |
| Wales | Standard | $108,120 |
| Waukesha | Standard | $65,090 |
| Waukesha | Standard | $75,600 |
| Waukesha | Standard | $92,450 |
Source: US Internal Revenue Service