ZIP Code 21792
Unionville · Frederick, Maryland
21792 is the ZIP code of Unionville in Frederick, Maryland, United States.
- ZIP Code
- 21792
- County
- Frederick
- State
- Maryland
- Country
- United States
Place with ZIP code 21792
| Place | County | Location |
|---|---|---|
| Unionville | Frederick | 39.475, -77.186 |
Near Baltimore
The nearest major city is Baltimore, about 53 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21792?
Unionville.
Which county and state is 21792 in?
Frederick, Maryland, United States.
What is the nearest major city to 21792?
Baltimore, about 53 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.