ZIP Code 21045
Columbia · Howard, Maryland
21045 is the ZIP code of Columbia in Howard, Maryland, United States.
- ZIP Code
- 21045
- County
- Howard
- State
- Maryland
- Country
- United States
Place with ZIP code 21045
| Place | County | Location |
|---|---|---|
| Columbia | Howard | 39.205, -76.832 |
Near Baltimore
The nearest major city is Baltimore, about 21 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21045?
Columbia.
Which county and state is 21045 in?
Howard, Maryland, United States.
What is the nearest major city to 21045?
Baltimore, about 21 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.