Catonsville zipcode
| City | Catonsville |
| ZIP Code | 21228 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Catonsville is 21228. This place is located in Maryland state in US. To send any postal service to Catonsville, you must use 21228 zipcode.
The ZIP code 21228 is also used with 1 more city name of Maryland.
- Baltimore, MD