ZIP Code 21104
Marriottsville · Carroll, Maryland
21104 is the ZIP code of Marriottsville in Carroll, Maryland, United States.
- ZIP Code
- 21104
- County
- Carroll
- State
- Maryland
- Country
- United States
Place with ZIP code 21104
| Place | County | Location |
|---|---|---|
| Marriottsville | Carroll | 39.334, -76.913 |
Near Baltimore
The nearest major city is Baltimore, about 26 km away.
Nearby ZIP codes
Frequently asked questions
Which places use ZIP code 21104?
Marriottsville.
Which county and state is 21104 in?
Carroll, Maryland, United States.
What is the nearest major city to 21104?
Baltimore, about 26 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.