What County Is 21104 In?
ZIP 21104 is located in
Howard County
Marriottsville, Maryland (MD)
Howard County — ZIP 21104
ZIP 21104 highlighted in Howard County, Maryland. Click neighboring ZIPs to explore.
ZIP Code Details
| ZIP Code | 21104 |
| County | Howard County |
| City | Marriottsville |
| State | Maryland (MD) |
| FIPS Code | 24027 |
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Frequently Asked Questions
What county is ZIP code 21104 in?
ZIP code 21104 is located in Howard County, Maryland (MD).
What city is ZIP code 21104 in?
ZIP code 21104 is primarily associated with Marriottsville, Maryland.
What state is ZIP code 21104 in?
ZIP code 21104 is in the state of Maryland (MD).