In which county is ZIP code 57031 located?

ZIP 57031 is listed under Yankton, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57031: Gayville, SD

ZIP: 57031

County: Yankton

Coordinates: 42.88350, -97.18300

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Gayville, SD postal area 57031. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Gayville
ZIP Code	57031
County	Yankton
State	SD
Latitude / Longitude	42.88350, -97.18300
ZIP Type	Standard
Time Zone	Central Time (CT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 57031 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57031 is commonly represented around 42.88350, -97.18300. These coordinates help identify the general area within Yankton, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57031 for mail delivery and general location reference in Yankton, SD.

This ZIP may extend beyond the city core into nearby communities within Yankton.

Related ZIP Codes (Nearby)

Explore other postal codes near Gayville within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57031?

The primary city for this ZIP code is Gayville, located in SD.

In which county is 57031 located?

ZIP code 57031 is situated within Yankton, SD.

What are the coordinates for 57031?

The approximate center point is 42.88350 (Latitude) and -97.18300 (Longitude).

Is ZIP code 57031 active?

This page lists ZIP 57031 as Listed based on the latest refresh date shown above.

Does ZIP 57031 cover multiple areas?

Yes. Many ZIP codes cover multiple neighborhoods or nearby areas. For exact boundaries, use official mapping tools.

Methodology & Data Notes

How we build this page: We generate this page from a structured ZIP dataset and refresh key fields (city, county, and coordinates) during scheduled updates. Coordinates represent an approximate center point, not an official boundary map.
Sources: Public ZIP reference datasets and geographic coordinate references. If you use specific sources (e.g., USPS, Census), list them on your About/Methodology page.

Page updated: 2026-01-08