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Zip Code 54401 — Wausau, WI

54401 is a ZIP Code associated with Wausau, WI, located within Marathon. The postal region supports an estimated population of 31,692 residents across Data Pending housing units, with a population density of 145.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (44.966470, -89.707940)

Data MetricLocal Statistic
Postal / Zip Code54401
Primary CityWausau
State / ProvinceWI
CountyMarathon
Total Population31,692
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density145.4 people/sq mi
TimezoneAmerica/Chicago

How 54401 Compares

MetricZIP 54401Marathon CountyWI State Average
Population31,692131,6885,914,913
Median IncomeData PendingN/AN/A
Population Density145.4 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 54417Brokaw5.0 mi4N/A
Zip 54448Marathon6.6 mi4,280N/A
Zip 54474Rothschild7.6 mi4,589N/A
Zip 54476Schofield10.5 mi19,377N/A
Zip 54403Wausau10.5 mi24,950N/A

Data Sources & Methodology: Geographic coordinates and ZIP Code assignments are derived from underlying geographic and postal datasets. Note that ZIP Codes are USPS postal delivery areas, while Census ZCTAs are statistical approximation areas. Read full methodology →