Zip Code 56731 — Humboldt, MN

ZIP Code 56731 is associated with Humboldt, MN, in Kittson County. The listed population estimate is 137; estimated density is 1.4 people per square mile. Among records with population estimates, it ranks #6 of 9 in Kittson County and #840 of 877 in MN.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (48.907710, -97.074750)

Data MetricLocal Statistic
Postal / Zip Code56731
Primary CityHumboldt
State / ProvinceMN
CountyKittson
Total Population137
Population Density1.4 people/sq mi
TimezoneAmerica/Chicago

How 56731 Compares

MetricZIP 56731Kittson County recordsMN records
Population estimate1374,086 (sum)5,739,754 (sum)
Population Density1.4 /sq mi----
County population rank#6 of 9----
State population rank#840 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 56755Saint Vincent4.8 mi82
ZIP 56728Hallock9.1 mi1,116
ZIP 56735Lancaster19.9 mi683
ZIP 56733Kennedy20.7 mi380
ZIP 56734Lake Bronson24.4 mi601

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 →