ZIP Code 21639
Greensboro · Caroline, Maryland
21639 is the ZIP code of Greensboro in Caroline, Maryland, United States.
- ZIP Code
- 21639
- County
- Caroline
- State
- Maryland
- Country
- United States
Place with ZIP code 21639
| Place | County | Location |
|---|---|---|
| Greensboro | Caroline | 38.962, -75.806 |
Near Baltimore
The nearest major city is Baltimore, about 79 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21639?
Greensboro.
Which county and state is 21639 in?
Caroline, Maryland, United States.
What is the nearest major city to 21639?
Baltimore, about 79 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.