ZIP Code 21758
Knoxville · Frederick, Maryland
21758 is the ZIP code of Knoxville in Frederick, Maryland, United States.
- ZIP Code
- 21758
- County
- Frederick
- State
- Maryland
- Country
- United States
Place with ZIP code 21758
| Place | County | Location |
|---|---|---|
| Knoxville | Frederick | 39.348, -77.651 |
Near Washington
The nearest major city is Washington, about 73 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21758?
Knoxville.
Which county and state is 21758 in?
Frederick, Maryland, United States.
What is the nearest major city to 21758?
Washington, about 73 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.