ZIP Code 57661
Whitehorse · Dewey, South Dakota
57661 is the ZIP code of Whitehorse in Dewey, South Dakota, United States.
- ZIP Code
- 57661
- County
- Dewey
- State
- South Dakota
- Country
- United States
Place with ZIP code 57661
| Place | County | Location |
|---|---|---|
| Whitehorse | Dewey | 45.270, -100.886 |
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 57661?
Whitehorse.
Which county and state is 57661 in?
Dewey, South Dakota, United States.
Source: GeoNames postal codes (CC BY 4.0), geonames.org, retrieved 2026-10-22. Place coordinates are approximate. Check with the national postal service before sending anything valuable.