ZIP Code 20851
Rockville · Montgomery, Maryland
20851 is the ZIP code of Rockville in Montgomery, Maryland, United States.
- ZIP Code
- 20851
- County
- Montgomery
- State
- Maryland
- Country
- United States
Place with ZIP code 20851
| Place | County | Location |
|---|---|---|
| Rockville | Montgomery | 39.076, -77.123 |
Near Washington
The nearest major city is Washington, about 22 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 20851?
Rockville.
Which county and state is 20851 in?
Montgomery, Maryland, United States.
What is the nearest major city to 20851?
Washington, about 22 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.