USA Area Codes
Area Code Gwynn Oak 410
Area Code: The city of Gwynn Oak is located in the state of Maryland (Baltimore county). The area code of Gwynn Oak is 410. For local calls is no area code required.
If you want to call from Annapolis to Gwynn Oak you have to dial +1 410 and the telephone number of the person you want to reach.
The following list shows Cities located close to Gwynn Oak:
| Area | Area Code |
|---|---|
| Pikesville | 410 |
| Windsor Mill | 410 |
Last change: 23.04.2007
