| Locality | Post Code |
|---|---|
| Baraboo, Sauk | 53913 |
| Hillpoint, Sauk | 53937 |
| La Valle, Sauk | 53941 |
| Lake Delton, Sauk | 53940 |
| Lime Ridge, Sauk | 53942 |
| Loganville, Sauk | 53943 |
| Merrimac, Sauk | 53561 |
| North Freedom, Sauk | 53951 |
| Plain, Sauk | 53577 |
| Prairie Du Sac, Sauk | 53578 |
| Reedsburg, Sauk | 53959 |
| Rock Springs, Sauk | 53961 |
| Sauk City, Sauk | 53583 |
| Spring Green, Sauk | 53588 |
| West Baraboo, Sauk | 53913 |