14 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 53913 | Baraboo | 21,704 |
| 53959 | Reedsburg | 14,451 |
| 53578 | Prairie Du Sac | 6,503 |
| 53583 | Sauk City | 5,816 |
| 53588 | Spring Green | 3,770 |
| 53941 | La Valle | 2,817 |
| 53951 | North Freedom | 2,452 |
| 53561 | Merrimac | 1,872 |
| 53577 | Plain | 1,363 |
| 53943 | Loganville | 1,245 |
| 53937 | Hillpoint | 1,157 |
| 53961 | Rock Springs | 831 |
| 53942 | Lime Ridge | 235 |
| 53940 | Lake Delton | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 14 ZCTAs in Sauk County, Wisconsin (US Census).