| General Information about Area Code 720 | |
|---|---|
| Country | United States |
| State / Province / Territory | Colorado |
| Major City | Denver |
| Time Zone | Mountain (UTC-07:00) |
| Prefix | Primary City | County | Phone Type |
|---|---|---|---|
| 720-327 | Denver | Denver | Wireless |
| 720-496 | Denver | Denver | Landline |
| 720-288 | Denver | Denver | Landline |
| 720-589 | Aurora | Adams | Wireless |
| 720-777 | Aurora | Adams | Landline |
| 720-600 | Longmont | Boulder | Landline |
| 720-943 | Denver | Denver | Landline |
| 720-418 | Denver | Denver | Landline |
| 720-548 | Denver | Denver | Landline |
| 720-467 | Denver | Denver | Wireless |
| 720-754 | Denver | Denver | Landline |
| 720-518 | Denver | Denver | Landline |
| 720-643 | Denver | Denver | - |
| 720-468 | Denver | Denver | Landline |
| 720-746 | Evergreen | Jefferson | Landline |
| 720-329 | Denver | Denver | Wireless |
| 720-200 | Denver | Denver | Landline |
| 720-254 | Aurora | Arapahoe | Wireless |
| 720-249 | Denver | Denver | Landline |
| 720-289 | Denver | Denver | Wireless |