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ZIP codes in Racine County

20 ZIPs touch Racine County, Wisconsin. The blue dashed line is the county border; orange ZIPs reach into it.

20

ZIP codes

10

cross the county line

263,279

people in these ZIPs

72

counties in WI

Most people

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Racine County ZIP list

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Questions people actually ask

How many ZIP codes are in Racine County, Wisconsin?

20 ZIP codes reach into Racine County, including 4 PO Box or single-address ZIPs placed by the town they serve. 10 of them are only partly in the county and also cover a neighboring county.

Which ZIP code in Racine County has the most people?

53402 (Racine) has about 34,850 residents, the most of any ZIP touching Racine County, in the Census Bureau’s ACS 2020–2024 estimates.

Can a ZIP code be in Racine County and another county?

Yes. ZIP codes follow mail routes, not county lines. Rows marked with a percentage show how much of that ZIP’s land is in Racine County. For one address, pin the exact spot on the ZIP finder to see its county.

Where does this list come from?

ZIP areas and their county overlaps come from the Census Bureau’s 2020 ZIP Code Tabulation Area to county relationship file. PO Box ZIPs have no area, so each is placed in the county of the ZIP area nearest the town it serves.

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