| 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 |
|---|---|---|---|
| 720-623 | Denver | Denver | Landline |
| 720-463 | Sedalia | Douglas | Landline |
| 720-609 | Denver | Denver | Wireless |
| 720-256 | Aurora | Arapahoe | Wireless |
| 720-498 | Denver | Denver | Wireless |
| 720-944 | Denver | Denver | Landline |
| 720-393 | Denver | Denver | Landline |
| 720-394 | Denver | Denver | Wireless |
| 720-748 | Denver | Denver | Landline |
| 720-888 | Denver | Adams | Landline |
| 720-641 | Denver | Denver | Wireless |
| 720-205 | Denver | Denver | Wireless |
| 720-471 | Denver | Denver | Wireless |
| 720-628 | Denver | Denver | Wireless |
| 720-485 | Denver | Denver | Landline |
| 720-504 | Denver | Denver | Landline |
| 720-241 | Denver | Denver | Landline |
| 720-558 | Denver | Denver | Landline |
| 720-278 | Aurora | Arapahoe | Landline |
| 720-587 | Denver | Denver | Landline |