| 240 Area Code Basic Information | |
|---|---|
| Area Code | 240 |
| Location | MD |
| Country | US |
| In Service Date | 1997-06-01 |
| Service Length | 29 years |
| Overlay Area Code? | Yes |
| Overlay Area Codes | 227 240 301 |
| Parent Area Code | 301 |
| Time Zone | E |
| Map | 603 |
| Area code in jeopardy? | No |
The following section explains how to dial outbound numbers from this area code.