Riderwood zip code
Zip code in Riderwood, MD
The location Riderwood belongs to Baltimore County, state of Maryland. Riderwood has been assigned with the zip code 21139.
Riderwood is the official name of the location so if you want to use the US Postal Service you must use that name.
| Zip code | Type | Population |
|---|---|---|
| 21139 | PO BOX | 157 |
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