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Zip Code 57078 — Yankton, SD

57078 is a ZIP Code associated with Yankton, SD, located within Yankton. The postal region supports an estimated population of 20,383 residents across Data Pending housing units, with a population density of 70.7 people per square mile.
WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.917820, -97.447020)

Data MetricLocal Statistic
Postal / Zip Code57078
Primary CityYankton
State / ProvinceSD
CountyYankton
Total Population20,383
Median Household IncomeData Pending
Total Housing UnitsData Pending
Population Density70.7 people/sq mi
TimezoneAmerica/Chicago

How 57078 Compares

MetricZIP 57078Yankton CountySD State Average
Population20,38323,618906,188
Median IncomeData PendingN/AN/A
Population Density70.7 /sq mi----

Nearby ZIP Codes

ZIP CodeCityDistancePopulationMedian Income
Zip 57046Mission Hill7.8 mi521N/A
Zip 57067Utica8.6 mi348N/A
Zip 57063Tabor12.1 mi882N/A
Zip 57040Lesterville12.2 mi222N/A
Zip 57072Volin13.2 mi435N/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 →