ZIP Code 20830
Olney · Montgomery, Maryland
20830 is the ZIP code of Olney in Montgomery, Maryland, United States.
- ZIP Code
- 20830
- County
- Montgomery
- State
- Maryland
- Country
- United States
Place with ZIP code 20830
| Place | County | Location |
|---|---|---|
| Olney | Montgomery | 39.155, -77.067 |
Near Washington
The nearest major city is Washington, about 29 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 20830?
Olney.
Which county and state is 20830 in?
Montgomery, Maryland, United States.
What is the nearest major city to 20830?
Washington, about 29 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.