In which county is ZIP code 57548 located?

ZIP 57548 is listed under Lyman, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57548: Lower Brule, SD

ZIP: 57548

County: Lyman

Coordinates: 44.09370, -99.61390

ZIP Type: Standard

Time Zone: Central Time (CT)

This profile provides an in-depth look at ZIP code 57548, serving Lower Brule in SD. It lies in Lyman and supports delivery, planning, and address verification.

Primary City	Lower Brule
ZIP Code	57548
County	Lyman
State	SD
Latitude / Longitude	44.09370, -99.61390
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 57548 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 57548 are listed as 44.09370 / -99.61390, useful for GPS and service checks in and around Lower Brule, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57548 for mail delivery and general location reference in Lyman, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Lower Brule within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57548?

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

In which county is 57548 located?

ZIP code 57548 is situated within Lyman, SD.

What are the coordinates for 57548?

The approximate center point is 44.09370 (Latitude) and -99.61390 (Longitude).

Is ZIP code 57548 active?

This page lists ZIP 57548 as Listed based on the latest refresh date shown above.

Does ZIP 57548 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