In which county is ZIP code 57437 located?

ZIP 57437 is listed under McPherson, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57437: Eureka, SD

ZIP: 57437

County: McPherson

Coordinates: 45.77070, -99.33080

ZIP Type: Standard

Time Zone: Central Time (CT)

Explore detailed information for ZIP code 57437 in Eureka, SD. We include verified county details for McPherson plus key geographic references used for mapping and logistics.

Primary City	Eureka
ZIP Code	57437
County	McPherson
State	SD
Latitude / Longitude	45.77070, -99.33080
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 57437 (not an exact boundary).

Geographic & Administrative Context

The geographic center of ZIP code 57437 is approximately 45.77070 (latitude) and -99.33080 (longitude). This location sits within McPherson, contributing to regional planning across SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57437 for mail delivery and general location reference in McPherson, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Eureka within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57437?

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

In which county is 57437 located?

ZIP code 57437 is situated within McPherson, SD.

What are the coordinates for 57437?

The approximate center point is 45.77070 (Latitude) and -99.33080 (Longitude).

Is ZIP code 57437 active?

This page lists ZIP 57437 as Listed based on the latest refresh date shown above.

Does ZIP 57437 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