ZIP Code 21010
Gunpowder · Harford, Maryland
21010 is the ZIP code of Gunpowder in Harford, Maryland, United States.
- ZIP Code
- 21010
- County
- Harford
- State
- Maryland
- Country
- United States
Place with ZIP code 21010
| Place | County | Location |
|---|---|---|
| Gunpowder | Harford | 39.398, -76.274 |
Near Baltimore
The nearest major city is Baltimore, about 31 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21010?
Gunpowder.
Which county and state is 21010 in?
Harford, Maryland, United States.
What is the nearest major city to 21010?
Baltimore, about 31 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.