Walworth County, Wisconsin Zip Codes
| Whitewater | 20,500 |
| Elkhorn | 18,868 |
| Lake Geneva | 17,842 |
| Delavan | 16,098 |
| East Troy | 10,889 |
| Genoa City | 9,185 |
| Walworth | 4,100 |
| Williams Bay | 3,268 |
| Sharon | 2,250 |
| Darien | 2,219 |
| Fontana | 1,738 |
| Springfield | 145 |
| Zenda | 118 |
| Pell Lake | 0 |
- Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.