Home > MN > Lac qui Parle County > Marietta > Zip 56257

Zip Code 56257 — Marietta, MN

56257 is a ZIP Code associated with Marietta, MN, located within Lac qui Parle. The postal region supports an estimated population of 377 residents across Data Pending housing units, with a population density of 1.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (44.968400, -96.402750)

Data MetricLocal Statistic
Postal / Zip Code56257
Primary CityMarietta
State / ProvinceMN
CountyLac qui Parle
Total Population377
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density1.6 people/sq mi
TimezoneAmerica/Chicago

How 56257 Compares

MetricZIP 56257Lac qui Parle CountyMN State Average
Population3776,3685,739,754
Median IncomeData PendingN/AN/A
Population Density1.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 56256Madison10.6 mi2,446N/A
Zip 56212Bellingham12.1 mi475N/A
Zip 56220Canby17.2 mi2,617N/A
Zip 56232Dawson18.0 mi2,379N/A
Zip 56276Odessa19.4 mi256N/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 →