Royal Oak zipcode
| City | Royal Oak |
| ZIP Code | 21662 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Royal Oak is 21662. This place is located in Maryland state in US. To send any postal service to Royal Oak, you must use 21662 zipcode.
| City | Royal Oak |
| ZIP Code | 21662 |
| Type | Standard |
| State Code | MD |
| State | Maryland |
ZIP code of Royal Oak is 21662. This place is located in Maryland state in US. To send any postal service to Royal Oak, you must use 21662 zipcode.
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