In which county is ZIP code 57639 located?

ZIP 57639 is listed under Corson, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57639: Little Eagle, SD

ZIP: 57639

County: Corson

Coordinates: 45.67580, -100.80430

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Explore detailed information for ZIP code 57639 in Little Eagle, SD. We include verified county details for Corson plus key geographic references used for mapping and logistics.

Primary City	Little Eagle
ZIP Code	57639
County	Corson
State	SD
Latitude / Longitude	45.67580, -100.80430
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 57639 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57639 is commonly represented around 45.67580, -100.80430. These coordinates help identify the general area within Corson, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57639 for mail delivery and general location reference in Corson, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Little Eagle within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57639?

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

In which county is 57639 located?

ZIP code 57639 is situated within Corson, SD.

What are the coordinates for 57639?

The approximate center point is 45.67580 (Latitude) and -100.80430 (Longitude).

Is ZIP code 57639 active?

This page lists ZIP 57639 as Listed based on the latest refresh date shown above.

Does ZIP 57639 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