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Zip Code 53538 — Fort Atkinson, WI

53538 is a ZIP Code associated with Fort Atkinson, WI, located within Jefferson. 53538 ranks #1 out of 10 ZIP codes in Jefferson County by population (and #117 out of 783 in WI). The area supports an estimated population of 18,813 residents across Data Pending housing units, with a population density of 74.8 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.916970, -88.871940)

Data MetricLocal Statistic
Postal / Zip Code53538
Primary CityFort Atkinson
State / ProvinceWI
CountyJefferson
Total Population18,813
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density74.8 people/sq mi
TimezoneAmerica/Chicago

How 53538 Compares

MetricZIP 53538Jefferson CountyWI State Average
Population18,81376,915 (Total)5,914,913 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density74.8 /sq mi----
County Pop Rank#1 of 10----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 53549Jefferson7.0 mi9,873N/A
Zip 53523Cambridge9.3 mi5,074N/A
Zip 53563Milton9.7 mi11,280N/A
Zip 53190Whitewater10.4 mi20,499N/A
Zip 53551Lake Mills11.4 mi9,731N/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 →