In which county is ZIP code 57638 located?

ZIP 57638 is listed under Perkins, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57638: Lemmon, SD

ZIP: 57638

County: Perkins

Coordinates: 45.91590, -102.19280

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Explore detailed information for ZIP code 57638 in Lemmon, SD. We include verified county details for Perkins plus key geographic references used for mapping and logistics.

Primary City	Lemmon
ZIP Code	57638
County	Perkins
State	SD
Latitude / Longitude	45.91590, -102.19280
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 57638 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57638 is commonly represented around 45.91590, -102.19280. These coordinates help identify the general area within Perkins, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57638 for mail delivery and general location reference in Perkins, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Lemmon within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57638?

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

In which county is 57638 located?

ZIP code 57638 is situated within Perkins, SD.

What are the coordinates for 57638?

The approximate center point is 45.91590 (Latitude) and -102.19280 (Longitude).

Is ZIP code 57638 active?

This page lists ZIP 57638 as Listed based on the latest refresh date shown above.

Does ZIP 57638 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