In which county is ZIP code 57657 located?

ZIP 57657 is listed under Corson, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57657: Trail City, SD

ZIP: 57657

County: Corson

Coordinates: 45.47250, -100.72540

ZIP Type: Standard

Time Zone: Mountain Time (MT)

This profile provides an in-depth look at ZIP code 57657, serving Trail City in SD. It lies in Corson and supports delivery, planning, and address verification.

Primary City	Trail City
ZIP Code	57657
County	Corson
State	SD
Latitude / Longitude	45.47250, -100.72540
ZIP Type	Standard
Time Zone	Mountain Time (MT)
Data Updated	2026-01-08

Maps & Useful Links

Open in Maps: Google Maps · OpenStreetMap

These links show the approximate center point for ZIP 57657 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57657 is commonly represented around 45.47250, -100.72540. These coordinates help identify the general area within Corson, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57657 for mail delivery and general location reference in Corson, SD.

Some addresses near Trail City may share this ZIP due to delivery routing and local service areas.

Related ZIP Codes (Nearby)

Explore other postal codes near Trail City within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57657?

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

In which county is 57657 located?

ZIP code 57657 is situated within Corson, SD.

What are the coordinates for 57657?

The approximate center point is 45.47250 (Latitude) and -100.72540 (Longitude).

Is ZIP code 57657 active?

This page lists ZIP 57657 as Listed based on the latest refresh date shown above.

Does ZIP 57657 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