In which county is ZIP code 57720 located?

ZIP 57720 is listed under Harding, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57720: Buffalo, SD

ZIP: 57720

County: Harding

Coordinates: 45.57400, -103.58260

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Get a reliable snapshot of the Buffalo, SD postal area 57720. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Buffalo
ZIP Code	57720
County	Harding
State	SD
Latitude / Longitude	45.57400, -103.58260
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 57720 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57720 is commonly represented around 45.57400, -103.58260. These coordinates help identify the general area within Harding, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57720 for mail delivery and general location reference in Harding, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Buffalo within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57720?

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

In which county is 57720 located?

ZIP code 57720 is situated within Harding, SD.

What are the coordinates for 57720?

The approximate center point is 45.57400 (Latitude) and -103.58260 (Longitude).

Is ZIP code 57720 active?

This page lists ZIP 57720 as Listed based on the latest refresh date shown above.

Does ZIP 57720 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