Home > IA > Shelby County > Irwin > Zip 51446

Zip Code 51446 — Irwin, IA

51446 is a ZIP Code associated with Irwin, IA, located within Shelby. The postal region supports an estimated population of 499 residents across Data Pending housing units, with a population density of 5.4 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.776630, -95.192770)

Data MetricLocal Statistic
Postal / Zip Code51446
Primary CityIrwin
State / ProvinceIA
CountyShelby
Total Population499
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density5.4 people/sq mi
TimezoneAmerica/Chicago

How 51446 Compares

MetricZIP 51446Shelby CountyIA State Average
Population49911,3103,210,984
Median IncomeData PendingN/AN/A
Population Density5.4 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 51447Kirkman3.8 mi113N/A
Zip 51454Manilla7.2 mi1,254N/A
Zip 51527Defiance8.8 mi362N/A
Zip 51432Aspinwall9.6 mi45N/A
Zip 51543Kimballton10.3 mi478N/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 →