In which county is ZIP code 57745 located?

ZIP 57745 is listed under Pennington, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57745: Hill City, SD

ZIP: 57745

County: Pennington

Coordinates: 43.93770, -103.57820

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Get a reliable snapshot of the Hill City, SD postal area 57745. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Hill City
ZIP Code	57745
County	Pennington
State	SD
Latitude / Longitude	43.93770, -103.57820
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 57745 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57745 is commonly represented around 43.93770, -103.57820. These coordinates help identify the general area within Pennington, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57745 for mail delivery and general location reference in Pennington, SD.

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

Related ZIP Codes (Nearby)

Explore other postal codes near Hill City within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57745?

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

In which county is 57745 located?

ZIP code 57745 is situated within Pennington, SD.

What are the coordinates for 57745?

The approximate center point is 43.93770 (Latitude) and -103.57820 (Longitude).

Is ZIP code 57745 active?

This page lists ZIP 57745 as Listed based on the latest refresh date shown above.

Does ZIP 57745 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