Fond du Lac County ZIP Codes
Fond du Lac County is a county of Wisconsin.
- ZIP codes
- 15
- Cities & towns
- 13
- Area codes
- 2
- Land area
- 720 sq mi
Every ZIP code in Fond du Lac County
| ZIP code | City |
|---|---|
| 53010 | Campbellsport |
| 53019 | Eden |
| 53049 | Malone |
| 53057 | Mount Calvary |
| 53065 | Oakfield |
| 53079 | Saint Cloud |
| 53919 | Brandon |
| 53931 | Fairwater |
| 54932 | Eldorado |
| 54935 | Fond Du Lac |
| 54936 | Fond Du Lac |
| 54937 | Fond Du Lac |
| 54971 | Ripon |
| 54974 | Rosendale |
| 54979 | Van Dyne |
We do not publish a delivery type (standard, PO box, unique) or a neighbourhood for each ZIP. USPS delivery-type products are licensed, and no clean-rights source maps ZIP codes to neighbourhoods — so the Fond du Lac County codes above are listed without a column we would have to invent.
Cities and towns in Fond du Lac County
A further 4 places in Fond du Lac County appear in the postal source without a page of its own; their codes are in the table above and each one links to its own page.
Area codes covering Fond du Lac County
Telephone and postal boundaries are drawn by different bodies, so these codes overlap the county without matching its edges.
Where Fond du Lac County's ZIP codes sit
- Reference points and footprint
- Not an official NANPA boundary
- Not a USPS delivery area
Scope every ZIP code recorded in Fond du Lac County. Source GeoNames US postal codes (2026-07 postal dump), Census 2024 county Gazetteer (2024 Gazetteer) and geoinfo-dataset (full_dataset) ZIP→NPA (2018 snapshot). Updated . The outline is a convex envelope of ZIP reference points, not a jurisdiction boundary.