In which county is ZIP code 57430 located?

ZIP 57430 is listed under Marshall, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57430: Britton, SD

ZIP: 57430

County: Marshall

Coordinates: 45.80230, -97.74180

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Britton, SD postal area 57430. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Britton
ZIP Code	57430
County	Marshall
State	SD
Latitude / Longitude	45.80230, -97.74180
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 57430 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 57430 are listed as 45.80230 / -97.74180, useful for GPS and service checks in and around Britton, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57430 for mail delivery and general location reference in Marshall, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Britton within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57430?

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

In which county is 57430 located?

ZIP code 57430 is situated within Marshall, SD.

What are the coordinates for 57430?

The approximate center point is 45.80230 (Latitude) and -97.74180 (Longitude).

Is ZIP code 57430 active?

This page lists ZIP 57430 as Listed based on the latest refresh date shown above.

Does ZIP 57430 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