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City ZIP codes · Wisconsin

Fond Du Lac, WI ZIP Codes

3 ZIP codes use the postal name Fond Du Lac, Wisconsin (Census 2020 ZCTAs and GeoNames postal codes, October 2026): 2 residential and 1 for PO boxes or a single organization. Median household income runs from $63,144 in 54935 to $81,841 in 54937, 1.3 times as much (Census Bureau, ACS 2020-2024). Fond Du Lac's most populous ZIP code is 54935, with 41,613 people (ACS 2020-2024); 0% of its land is in the city of Fond Du Lac.

  • ACS2020-24
  • Census2020
  • GeoNames2026

Where are Fond Du Lac's ZIP codes?

54935: $63k median household income54937: $82k median household income549375493554935: $63k median household income54937: $82k median household income549375493554935: $63k median household income54937: $82k median household income5493754935
The 2 residential ZIP codes named Fond Du Lac, shaded by median household income in national fifths (ACS 2020-2024). Select a ZIP to open it. <$54.1k$98.1k+no figure

Source: U.S. Census Bureau, 2020 ZCTA cartographic boundaries; ACS 2020-2024 5-year estimates (B19013).

How different are Fond Du Lac's ZIP codes?

The highest median household income is in 54937 ($81,841), the lowest in 54935 ($63,144). Home values run from $180,200 in 54935 to $272,200 in 54937.

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates (B19013, B25077, B01003).

All 2 residential ZIP codes of Fond Du Lac

Residential ZIP codes with the postal name Fond Du Lac, WI, largest first (ACS 2020-2024); sort by any column
County
54935 Fond du Lac County 41,613 2,669 $63k $180k
54937 Fond du Lac County 21,687 181 $82k $272k

Download the 3 ZIP codes as CSV

Source: U.S. Census Bureau, ACS 2020-2024 5-year estimates; 2023 Gazetteer land areas (2020 ZCTAs); town names from simplemaps US ZIP Codes (CC BY 4.0) and GeoNames (CC BY 4.0).

PO Box and single-organization ZIP codes in Fond Du Lac

1 ZIP code named Fond Du Lac has no residential delivery area: post office boxes, or one organization (a large employer, an agency, a university) with its own code. The Census Bureau publishes no figures for them.

Fond Du Lac, WI: ZIP codes without a residential area, for PO boxes or one organization (GeoNames postal codes; USPS does not publish openly which is which)
ZIPCounty
54936Fond du Lac County

Source: GeoNames postal codes (CC BY 4.0); a ZIP code with no Census ZCTA has no residential delivery area.

Which counties do Fond Du Lac's ZIP codes reach?

Fond Du Lac's residential ZIP codes lie in Fond du Lac County.

Which places do Fond Du Lac's ZIP codes cover?

A postal name is not a city limit. By the Census Bureau's places, Fond Du Lac's residential ZIP codes cover 3 other places, each listed with the ZIP codes that have at least 5% of their land in it or hold most of the place:

Source: U.S. Census Bureau, 2020 ZCTA-to-place relationship file (shares of land).

Which first three digits do Fond Du Lac's ZIP codes use?

The first three digits of a ZIP code name the sectional center, the mail processing plant that sorts it. Every ZIP code of Fond Du Lac starts with 549.

Three-digit prefixes of Fond Du Lac's ZIP codes, the sectional center for each (USPS labeling list L005, effective October 1, 2026) and how many of the prefix's codes are Fond Du Lac's
PrefixSectional centerHereAll codes
549 Milwaukee, WI (SCF 530) 3 66

Source: U.S. Postal Service, labeling list L005 (3-digit ZIP Code prefix groups, SCF sortation), effective October 1, 2026.