Home > IA > Woodbury County > Sioux City > Zip 51105

Zip Code 51105 — Sioux City, IA

51105 is a ZIP Code associated with Sioux City, IA, located within Woodbury. The postal region supports an estimated population of 10,415 residents across Data Pending housing units, with a population density of 675.6 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.508080, -96.367100)

Data MetricLocal Statistic
Postal / Zip Code51105
Primary CitySioux City
State / ProvinceIA
CountyWoodbury
Total Population10,415
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density675.6 people/sq mi
TimezoneAmerica/Chicago

How 51105 Compares

MetricZIP 51105Woodbury CountyIA State Average
Population10,41597,4393,210,984
Median IncomeData PendingN/AN/A
Population Density675.6 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 51101Sioux City1.7 mi1,031N/A
Zip 51104Sioux City2.6 mi23,197N/A
Zip 51106Sioux City3.9 mi28,592N/A
Zip 51108Sioux City4.1 mi5,960N/A
Zip 51103Sioux City4.1 mi16,895N/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 →