ZIP codes in Bayfield County
16 ZIPs touch Bayfield County, Wisconsin. The blue dashed line is the county border; orange ZIPs reach into it.
16
ZIP codes
7
cross the county line
30,812
people in these ZIPs
72
counties in WI
Most people
Bayfield County ZIP list
More counties in Wisconsin
- Adams County15
- Ashland County11
- Barron County20
- Brown County24
- Buffalo County10
- Burnett County11
- Calumet County15
- Chippewa County15
- Clark County21
Questions people actually ask
How many ZIP codes are in Bayfield County, Wisconsin?
16 ZIP codes reach into Bayfield County, including 1 PO Box or single-address ZIPs placed by the town they serve. 7 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Bayfield County has the most people?
54806 (Ashland) has about 11,704 residents, the most of any ZIP touching Bayfield County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Bayfield 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 Bayfield 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.
Keep exploring
Updated 2026-11-10 · Where the data comes from