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Zip Code 55803 — Duluth, MN

55803 is a ZIP Code associated with Duluth, MN, located within St. Louis. The postal region supports an estimated population of 17,662 residents across Data Pending housing units, with a population density of 23.1 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (47.033980, -92.071040)

Data MetricLocal Statistic
Postal / Zip Code55803
Primary CityDuluth
State / ProvinceMN
CountySt. Louis
Total Population17,662
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density23.1 people/sq mi
TimezoneAmerica/Chicago

How 55803 Compares

MetricZIP 55803St. Louis CountyMN State Average
Population17,662192,5525,739,754
Median IncomeData PendingN/AN/A
Population Density23.1 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 55804Duluth9.4 mi15,922N/A
Zip 55609Knife River14.3 mi131N/A
Zip 55717Canyon14.9 mi287N/A
Zip 55814Duluth15.0 mi319N/A
Zip 55811Duluth15.3 mi28,118N/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 →