County · Wisconsin · United States
Fond du Lac County ZIP codes
14 ZIP codes · 13 cities · FIPS 55039
Key facts
- State
- Wisconsin (WI)
- FIPS code
- 55039
- Population
- 104,053
- Median household income
- $73,154
- Median age
- 41.9
- Land area
- 719.6 sq mi (1,863.7 km²)
- Population density
- 145 / sq mi
- Area codes
- 274, 920
Cities and ZIP codes in Fond du Lac County (13)
About this page
County figures are Census county-level values (ACS 5-year); the ZIP list shows the ZIPs whose primary county this is — a ZIP on a border can also serve neighbouring counties.
Sources: U.S. Census Bureau (2020 county relationship file, ACS 5-year) · GeoNames. Methodology.