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Zip Code 55609 — Knife River, MN

55609 is a ZIP Code associated with Knife River, MN, located within Lake. The postal region supports an estimated population of 131 residents across Data Pending housing units, with a population density of 20.3 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (46.963600, -91.785540)

Data Metric	Local Statistic
Postal / Zip Code	55609
Primary City	Knife River
State / Province	MN
County	Lake
Total Population	131
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	20.3 people/sq mi
Timezone	America/Chicago

How 55609 Compares

Metric	ZIP 55609	Lake County	MN State Average
Population	131	16,172	5,739,754
Median Income	Data Pending	N/A	N/A
Population Density	20.3 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 55804	Duluth	7.1 mi	15,922	N/A
Zip 55803	Duluth	14.3 mi	17,662	N/A
Zip 55812	Duluth	17.2 mi	10,859	N/A
Zip 55805	Duluth	18.5 mi	10,602	N/A
Zip 55802	Duluth	20.2 mi	2,399	N/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 →