| General Information about Area Code 301 | |
|---|---|
| Country | United States |
| State / Province / Territory | Maryland |
| Major City | Rockville |
| Time Zone | Eastern (UTC-05:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 301-462 | Myersville | Frederick | Wireless |
| 301-430 | Bowie | Prince Georges | Landline |
| 301-203 | Accokeek | Prince Georges | Landline |
| 301-529 | Rockville | Montgomery | Wireless |
| 301-708 | College Park | Prince Georges | Wireless |
| 301-253 | Damascus | Montgomery | Landline |
| 301-743 | Indian Head | Charles | Landline |
| 301-823 | Brentwood | Prince Georges | Landline |
| 301-310 | Columbia | Howard | Landline |
| 301-882 | New Market | Frederick | Landline |
| 301-427 | Takoma Park | Montgomery | Landline |
| 301-226 | Hyattsville | Prince Georges | Landline |
| 301-365 | Potomac | Montgomery | Landline |
| 301-489 | College Park | Prince Georges | Landline |
| 301-434 | Silver Spring | Montgomery | Landline |
| 301-729 | Cumberland | Allegany | Landline |
| 301-968 | Chevy Chase | Montgomery | Landline |
| 301-309 | Rockville | Montgomery | Landline |
| 301-257 | Laurel | Prince Georges | Wireless |
| 301-848 | Waldorf | Charles | Wireless |