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Zip Code 55781 — Side Lake, MN

55781 is a ZIP Code associated with Side Lake, MN, located within Itasca. The postal region supports an estimated population of 821 residents across Data Pending housing units, with a population density of 3.9 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (47.675870, -93.065240)

Data MetricLocal Statistic
Postal / Zip Code55781
Primary CitySide Lake
State / ProvinceMN
CountyItasca
Total Population821
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density3.9 people/sq mi
TimezoneAmerica/Chicago

How 55781 Compares

MetricZIP 55781Itasca CountyMN State Average
Population82145,2075,739,754
Median IncomeData PendingN/AN/A
Population Density3.9 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 55719Chisholm12.8 mi5,613N/A
Zip 55703Angora13.9 mi906N/A
Zip 55723Cook14.5 mi1,927N/A
Zip 55769Nashwauk14.7 mi2,219N/A
Zip 55710Britt17.4 mi1,362N/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 →