ZIP Code 57223
Castlewood · Hamlin, South Dakota
57223 is the ZIP code of Castlewood in Hamlin, South Dakota, United States.
- ZIP Code
- 57223
- County
- Hamlin
- State
- South Dakota
- Country
- United States
Place with ZIP code 57223
| Place | County | Location |
|---|---|---|
| Castlewood | Hamlin | 44.731, -97.020 |
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 57223?
Castlewood.
Which county and state is 57223 in?
Hamlin, 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.