ZIP Code 21738
Glenwood · Howard, Maryland
21738 is the ZIP code of Glenwood in Howard, Maryland, United States.
- ZIP Code
- 21738
- County
- Howard
- State
- Maryland
- Country
- United States
Place with ZIP code 21738
| Place | County | Location |
|---|---|---|
| Glenwood | Howard | 39.279, -77.015 |
Near Baltimore
The nearest major city is Baltimore, about 35 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21738?
Glenwood.
Which county and state is 21738 in?
Howard, Maryland, United States.
What is the nearest major city to 21738?
Baltimore, about 35 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.