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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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Waukesha County ZIP Codes

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

County State ZIP Code City Area Codes
Waukesha County WI 53127 Genesee Depot 262
Waukesha County WI 53146 New Berlin 262
Waukesha County WI 53149 Mukwonago 262
Waukesha County WI 53150 Muskego 262, 414
Waukesha County WI 53151 New Berlin 262, 414
Waukesha County WI 53153 North Prairie 262
Waukesha County WI 53183 Wales 262
Waukesha County WI 53186 Waukesha 262
Waukesha County WI 53187 Waukesha 262
Waukesha County WI 53188 Waukesha 262
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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.