ZIP Code 21655
Preston · Caroline, Maryland
21655 is the ZIP code of Preston in Caroline, Maryland, United States.
- ZIP Code
- 21655
- County
- Caroline
- State
- Maryland
- Country
- United States
Place with ZIP code 21655
| Place | County | Location |
|---|---|---|
| Preston | Caroline | 38.746, -75.916 |
Near Baltimore
The nearest major city is Baltimore, about 85 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21655?
Preston.
Which county and state is 21655 in?
Caroline, Maryland, United States.
What is the nearest major city to 21655?
Baltimore, about 85 km away.
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.