Zip Code 55803 — Duluth, MN

ZIP Code 55803 is associated with Duluth, MN, in St. Louis County. The listed population estimate is 17,662; estimated density is 23.1 people per square mile. Among records with population estimates, it ranks #2 of 42 in St. Louis County and #114 of 877 in MN.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (47.033980, -92.071040)

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

How 55803 Compares

MetricZIP 55803St. Louis County recordsMN records
Population estimate17,662192,552 (sum)5,739,754 (sum)
Population Density23.1 /sq mi----
County population rank#2 of 42----
State population rank#114 of 877----

Regional sums combine the population estimates in the listed ZIP records; they are not official county or state population totals.

Explore More ZIP Codes

Nearby ZIP Codes in MN

ZIP CodeCityDistancePopulation estimate
ZIP 55804Duluth9.4 mi15,922
ZIP 55609Knife River14.3 mi131
ZIP 55717Canyon14.9 mi287
ZIP 55814Duluth15.0 mi319
ZIP 55811Duluth15.3 mi28,118

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 →