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U.S. ZIP Codes Database 2026

Search by ZIP code, city, county, or state and find clear postal details with maps, time zones, and area code data.

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Sauk County ZIP Codes

Browse all ZIP Codes, cities, and associated area codes registered in Sauk County.

County State ZIP Code City Area Codes
Sauk County WI 53561 Merrimac 608
Sauk County WI 53577 Plain 608
Sauk County WI 53578 Prairie Du Sac 608
Sauk County WI 53583 Sauk City 608
Sauk County WI 53588 Spring Green 608
Sauk County WI 53913 Baraboo 608
Sauk County WI 53937 Hillpoint 608
Sauk County WI 53940 Lake Delton 608
Sauk County WI 53941 La Valle 608
Sauk County WI 53942 Lime Ridge 608
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About U.S. ZIP Codes

ZIP codes are a United States Postal Service system introduced in 1963 to make mail routing more accurate and efficient. The standard format uses five digits, while ZIP+4 adds four more digits for a more precise delivery segment.

ZIP codes cover the United States, its territories, military mail routes, and other USPS delivery points. This directory organizes that data for practical lookup by ZIP code, city, county, and state.