Home > SD > Yankton County > Gayville > Zip 57031

Zip Code 57031 — Gayville, SD

57031 is a ZIP Code associated with Gayville, SD, located within Yankton. The postal region supports an estimated population of 784 residents across Data Pending housing units, with a population density of 7.7 people per square mile.

WorldPlaceData database updated: October 2026

📍 View location on OpenStreetMap (42.870580, -97.186550)

Data Metric	Local Statistic
Postal / Zip Code	57031
Primary City	Gayville
State / Province	SD
County	Yankton
Total Population	784
Median Household Income	Data Pending
Total Housing Units	Data Pending
Population Density	7.7 people/sq mi
Timezone	America/Chicago

How 57031 Compares

Metric	ZIP 57031	Yankton County	SD State Average
Population	784	23,618	906,188
Median Income	Data Pending	N/A	N/A
Population Density	7.7 /sq mi	--	--

Nearby ZIP Codes

ZIP Code	City	Distance	Population	Median Income
Zip 57072	Volin	8.1 mi	435	N/A
Zip 57046	Mission Hill	8.3 mi	521	N/A
Zip 57069	Vermillion	10.2 mi	13,091	N/A
Zip 57073	Wakonda	11.2 mi	564	N/A
Zip 57078	Yankton	13.6 mi	20,383	N/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 →