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Zip Code 51557 — Mondamin, IA

51557 is a ZIP Code associated with Mondamin, IA, located within Harrison. 51557 ranks #5 out of 10 ZIP codes in Harrison County by population (and #522 out of 970 in IA). The area supports an estimated population of 828 residents across Data Pending housing units, with a population density of 4.2 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.729030, -96.002330)

Data MetricLocal Statistic
Postal / Zip Code51557
Primary CityMondamin
State / ProvinceIA
CountyHarrison
Total Population828
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density4.2 people/sq mi
TimezoneAmerica/Chicago

How 51557 Compares

MetricZIP 51557Harrison CountyIA State Average
Population82814,759 (Total)3,210,984 (Total)
Average ZIP IncomeData PendingN/AN/A
Population Density4.2 /sq mi----
County Pop Rank#5 of 10----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 51556Modale6.8 mi266N/A
Zip 51550Magnolia7.1 mi169N/A
Zip 51564Pisgah7.6 mi520N/A
Zip 51545Little Sioux7.7 mi267N/A
Zip 51555Missouri Valley12.6 mi4,952N/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 →