14 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 53190 | Whitewater | 20,500 |
| 53121 | Elkhorn | 18,868 |
| 53147 | Lake Geneva | 17,842 |
| 53115 | Delavan | 16,098 |
| 53120 | East Troy | 10,889 |
| 53128 | Genoa City | 9,185 |
| 53184 | Walworth | 4,100 |
| 53191 | Williams Bay | 3,268 |
| 53585 | Sharon | 2,250 |
| 53114 | Darien | 2,219 |
| 53125 | Fontana | 1,738 |
| 53176 | Springfield | 145 |
| 53195 | Zenda | 118 |
| 53157 | Pell Lake | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 14 ZCTAs in Walworth County, Wisconsin (US Census).