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

Zip Code 56257 — Marietta, MN

ZIP Code 56257 is associated with Marietta, MN, in Lac qui Parle County. The listed population estimate is 377; estimated density is 1.6 people per square mile. Among records with population estimates, it ranks #5 of 6 in Lac qui Parle County and #756 of 877 in MN.
Page generated: 2026-10-08. This is not the source data release date.

📍 View location on OpenStreetMap (44.968400, -96.402750)

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

How 56257 Compares

MetricZIP 56257Lac qui Parle County recordsMN records
Population estimate3776,368 (sum)5,739,754 (sum)
Population Density1.6 /sq mi----
County population rank#5 of 6----
State population rank#756 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 56256Madison10.6 mi2,446
ZIP 56212Bellingham12.1 mi475
ZIP 56220Canby17.2 mi2,617
ZIP 56232Dawson18.0 mi2,379
ZIP 56276Odessa19.4 mi256

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 →