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Wisconsin ZIP codes

All 896 ZIPs in Wisconsin, 53001 to 54990. Tap one on the map or in the list.

896

ZIP codes

5,914,913

people live in them

72

counties

113

PO Box & no-area ZIPs

Most people

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All 896 Wisconsin ZIP codes

ZIP codes by county

Pick a county for its ZIP list and map. Counts include ZIPs that only partly reach into the county.

Questions people actually ask

How many ZIP codes are in Wisconsin?

896 ZIP codes are in use in Wisconsin. 783 cover a delivery area, and 113 are PO Box, single-building or organization ZIPs with no area of their own.

What do Wisconsin ZIP codes start with?

Wisconsin ZIP codes start with these three-digit prefixes: 530–532, 534–535, 537–549. Each prefix is a mail sorting area run from one processing center.

Which Wisconsin ZIP code has the most people?

53215 in Milwaukee has the most residents of any Wisconsin ZIP, about 58,146 people in the Census Bureau’s ACS 2020–2024 estimates.

Which Wisconsin county has the most ZIP codes?

Dane County touches 68 ZIP codes, the most of the 72 counties in Wisconsin. 318 Wisconsin ZIPs reach into more than one county.

Are these the official USPS ZIP code boundaries?

The map uses Census ZIP Code Tabulation Areas, the standard public stand-in for USPS delivery areas. They match for almost every home. For a mailing address, the USPS ZIP Code lookup has the final word.

Keep exploring

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Updated 2026-11-10 · Where the data comes from