14 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 53190 | Whitewater | 20,499 |
| 53147 | Lake Geneva | 18,638 |
| 53121 | Elkhorn | 18,551 |
| 53115 | Delavan | 16,381 |
| 53120 | East Troy | 10,848 |
| 53128 | Genoa City | 9,030 |
| 53184 | Walworth | 4,169 |
| 53191 | Williams Bay | 3,261 |
| 53585 | Sharon | 2,264 |
| 53114 | Darien | 1,979 |
| 53125 | Fontana | 1,898 |
| 53195 | Zenda | 133 |
| 53176 | Springfield | 100 |
| 53157 | Pell Lake | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Walworth County, Wisconsin (US Census).