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Zip Code 54542 — Long Lake, WI

54542 is a ZIP Code associated with Long Lake, WI, located within Forest. 54542 ranks #6 out of 7 ZIP codes in Forest County by population (and #670 out of 783 in WI). The area supports an estimated population of 702 residents across Data Pending housing units, with a population density of 1.0 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (45.921270, -88.725360)

Data MetricLocal Statistic
Postal / Zip Code54542
Primary CityLong Lake
State / ProvinceWI
CountyForest
Total Population702
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1.0 people/sq mi
TimezoneAmerica/Chicago

How 54542 Compares

MetricZIP 54542Forest CountyWI State Average
Population70210,139 (Total)5,914,913 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density1.0 /sq mi----
County Pop Rank#6 of 7----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 54511Argonne14.6 mi1,393N/A
Zip 54120Fence15.9 mi213N/A
Zip 54554Phelps18.6 mi1,148N/A
Zip 54562Three Lakes18.7 mi2,038N/A
Zip 54121Florence19.5 mi3,257N/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 →