Home > IA > Shelby County > Defiance > Zip 51527

Zip Code 51527 — Defiance, IA

51527 is a ZIP Code associated with Defiance, IA, located within Shelby. The postal region supports an estimated population of 362 residents across Data Pending housing units, with a population density of 3.3 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (41.828750, -95.348000)

Data MetricLocal Statistic
Postal / Zip Code51527
Primary CityDefiance
State / ProvinceIA
CountyShelby
Total Population362
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density3.3 people/sq mi
TimezoneAmerica/Chicago

How 51527 Compares

MetricZIP 51527Shelby CountyIA State Average
Population36211,3103,210,984
Median IncomeData PendingN/AN/A
Population Density3.3 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 51530Earling5.1 mi809N/A
Zip 51578Westphalia7.9 mi116N/A
Zip 51454Manilla8.1 mi1,254N/A
Zip 51446Irwin8.8 mi499N/A
Zip 51528Dow City10.4 mi674N/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 →