In which county is ZIP code 57457 located?

ZIP 57457 is listed under McPherson, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57457: Longlake, SD

ZIP: 57457

County: McPherson

Coordinates: 45.88230, -99.16980

ZIP Type: Standard

Time Zone: Central Time (CT)

Get a reliable snapshot of the Longlake, SD postal area 57457. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Longlake
ZIP Code	57457
County	McPherson
State	SD
Latitude / Longitude	45.88230, -99.16980
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 57457 (not an exact boundary).

Geographic & Administrative Context

Coordinates for 57457 are listed as 45.88230 / -99.16980, useful for GPS and service checks in and around Longlake, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57457 for mail delivery and general location reference in McPherson, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Longlake within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57457?

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

In which county is 57457 located?

ZIP code 57457 is situated within McPherson, SD.

What are the coordinates for 57457?

The approximate center point is 45.88230 (Latitude) and -99.16980 (Longitude).

Is ZIP code 57457 active?

This page lists ZIP 57457 as Listed based on the latest refresh date shown above.

Does ZIP 57457 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