Sauk County, WI ZIP codes
Sauk County ZIP codes by town
Each ZIP code is listed under the county most of its land lies in and the town the Postal Service names it for; a ZIP code's own page shows exactly how it is split.
Map of Sauk County ZIP codes
The ZIP codes of Sauk County, shaded. Outlines are Census ZIP Code Tabulation Areas (2020), which approximate the mail routes; PO-box and single-address codes have no area and are not drawn. Click any area to open its ZIP code.
Sauk County in numbers
About 66,009 people live in Sauk County, in 27,987 households, the 25th most populous of Wisconsin's 72 counties. The median household income is $79,541 a year, about the same as the Wisconsin median of $77,485 (US: $80,734). The median owner-occupied home is valued at $258,600 (about the same as the Wisconsin median), and median gross rent is $1,018 a month. The median age is 41.6; 27.3% of adults 25 and over hold a bachelor's degree or higher (33.4% across Wisconsin); the average commute takes 23 minutes.
| Population | 66,009 |
|---|---|
| Households | 27,987 |
| Median age | 41.6 |
| Median household income | $79,541 |
| Median home value | $258,600 |
| Median gross rent | $1,018 |
| Bachelor's degree or higher | 27.3% |
| Mean commute | 23.0 min |
| Population density | 79 / sq mi |
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates. Survey estimates carry margins of error, wider for small places. Sources and methods.
Largest towns in Sauk County
| Town | ZIP codes | Population |
|---|---|---|
| Baraboo | 1 | 12,769 |
| Reedsburg | 2 | 10,168 |
| Prairie Du Sac | 1 | 4,382 |
| Sauk City | 1 | 3,483 |
| Lake Delton | 1 | 3,482 |
| Spring Green | 1 | 1,397 |
| Hillpoint | 1 | 1,157 |
| Plain | 1 | 780 |
| North Freedom | 1 | 716 |
| Merrimac | 1 | 570 |
| La Valle | 1 | 326 |
| Rock Springs | 1 | 323 |
| Lime Ridge | 1 | 263 |
| Loganville | 1 | 252 |
Population of the census place of that name where there is one, otherwise of the ZIP codes the Postal Service addresses by it. A town's ZIP codes can reach past the county line.
Neighbouring counties
Counties that share a ZIP code with Sauk County.
- Dane County (57)
- Columbia County (14)
- Vernon County (10)
- Juneau County (10)
- Iowa County (13)
- Adams County (7)
- Richland County (7)
Not sure you are in Sauk County? What county am I in? answers from your location, near a county line included.
Every ZIP code in Sauk County, with figures
| ZIP | City | Type | Population | Median income | Median home |
|---|---|---|---|---|---|
53561 | Merrimac , WI | Standard | 1,872 | $91,103 | $427,600 |
53577 | Plain , WI | Standard | 1,363 | $96,500 | $271,100 |
53578 | Prairie Du Sac , WI | Standard | 6,503 | $105,610 | $347,000 |
53583 | Sauk City , WI | Standard | 5,816 | $97,286 | $344,000 |
53588 | Spring Green , WI | Standard | 3,770 | $83,417 | $292,300 |
53913 | Baraboo , WI | Standard | 21,704 | $74,629 | $234,900 |
53937 | Hillpoint , WI | Standard | 1,157 | $87,292 | $318,200 |
53940 | Lake Delton , WI | Standard | 0 | — | — |
53941 | La Valle , WI | Standard | 2,817 | $82,537 | $261,100 |
53942 | Lime Ridge , WI | Standard | 235 | $112,292 | $133,300 |
53943 | Loganville , WI | Standard | 1,245 | $73,000 | $225,600 |
53951 | North Freedom , WI | Standard | 2,452 | $71,970 | $190,400 |
53958 | Reedsburg , WI | No street area | — | — | — |
53959 | Reedsburg , WI | Standard | 14,451 | $77,924 | $255,300 |
53961 | Rock Springs , WI | Standard | 831 | $77,298 | $210,500 |
Cite this page
zipcodes.pro. “Sauk County ZIP codes.” Data release 2026-10-12. Retrieved 2026-10-20. https://zipcodes.pro/state/wi/county/sauk
Underlying data is public domain or openly licensed — sources, vintages and licences.