In which county is ZIP code 57633 located?

ZIP 57633 is listed under Dewey, SD.

When was this page updated?

This page was updated on 2026-01-08.

ZIP Code 57633: Isabel, SD

ZIP: 57633

County: Dewey

Coordinates: 45.39620, -101.43850

ZIP Type: Standard

Time Zone: Mountain Time (MT)

Get a reliable snapshot of the Isabel, SD postal area 57633. This page summarizes county, coordinates, and local facts to help with services and location research.

Primary City	Isabel
ZIP Code	57633
County	Dewey
State	SD
Latitude / Longitude	45.39620, -101.43850
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 57633 (not an exact boundary).

Geographic & Administrative Context

For mapping and verification, 57633 is commonly represented around 45.39620, -101.43850. These coordinates help identify the general area within Dewey, SD.

Local Coverage Notes

ZIP codes can cover multiple neighborhoods and unincorporated areas. Use ZIP 57633 for mail delivery and general location reference in Dewey, SD.

Coverage may include nearby neighborhoods and adjacent unincorporated areas commonly associated with Isabel.

Related ZIP Codes (Nearby)

Explore other postal codes near Isabel within SD.

Frequently Asked Questions

What is the primary city for ZIP code 57633?

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

In which county is 57633 located?

ZIP code 57633 is situated within Dewey, SD.

What are the coordinates for 57633?

The approximate center point is 45.39620 (Latitude) and -101.43850 (Longitude).

Is ZIP code 57633 active?

This page lists ZIP 57633 as Listed based on the latest refresh date shown above.

Does ZIP 57633 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