In which county is ZIP code 57631 located?

ZIP 57631 is listed under Walworth, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57631: Glenham, SD

ZIP: 57631

County: Walworth

Coordinates: 45.53350, -100.27160

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Get a reliable snapshot of the Glenham, SD postal area 57631. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Glenham
ZIP Code	57631
County	Walworth
State	SD
Latitude / Longitude	45.53350, -100.27160
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 57631 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57631 is commonly represented around 45.53350, -100.27160. These coordinates help identify the general area within Walworth, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57631 for mail delivery and general location reference in Walworth, SD.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Glenham.

Related ZIP Codes (Nearby)

Explore other postal codes near Glenham within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57631?

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

In which county is 57631 located?

ZIP code 57631 is situated within Walworth, SD.

What are the coordinates for 57631?

The approximate center point is 45.53350 (Latitude) and -100.27160 (Longitude).

Is ZIP code 57631 active?

This page lists ZIP 57631 as Listed based on the latest refresh date shown above.

Does ZIP 57631 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