There are 10 zip codes in Bayfield County, Wisconsin. The most populated is 54891, located in Washburn. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
548913,338Washburn
548142,810Bayfield
548472,310Iron River
548561,644Mason
548211,471Cable
54865539Port Wing
54832434Drummond
54839327Grand View
54827312Cornucopia
54844255Herbster

Zip Codes in Bayfield County, Wisconsin by Population (2024)