ZIP codes in Eau Claire County
17 ZIPs touch Eau Claire County, Wisconsin. The blue dashed line is the county border; orange ZIPs reach into it.
17
ZIP codes
12
cross the county line
177,237
people in these ZIPs
72
counties in WI
Most people
Eau Claire County ZIP list
More counties in Wisconsin
- Crawford County14
- Dane County68
- Dodge County32
- Door County14
- Douglas County12
- Dunn County24
- Florence County4
- Fond du Lac County25
- Forest County11
- Grant County25
- Green County12
- Green Lake County12
Questions people actually ask
How many ZIP codes are in Eau Claire County, Wisconsin?
17 ZIP codes reach into Eau Claire County, including 2 PO Box or single-address ZIPs placed by the town they serve. 12 of them are only partly in the county and also cover a neighboring county.
Which ZIP code in Eau Claire County has the most people?
54703 (Eau Claire) has about 44,153 residents, the most of any ZIP touching Eau Claire County, in the Census Bureau’s ACS 2020–2024 estimates.
Can a ZIP code be in Eau Claire 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 Eau Claire 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