| 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 |
|---|---|---|---|
| 720-439 | Denver | Denver | Wireless |
| 720-397 | Denver | Denver | Landline |
| 720-982 | Aurora | Arapahoe | Wireless |
| 720-930 | Denver | Denver | - |
| 720-459 | Denver | Denver | Landline |
| 720-857 | Denver | Denver | Landline |
| 720-253 | Aurora | Arapahoe | Wireless |
| 720-270 | Denver | Denver | Wireless |
| 720-202 | Denver | Denver | Wireless |
| 720-688 | Denver | Denver | Wireless |
| 720-568 | Denver | Adams | Landline |
| 720-305 | Denver | Denver | Landline |
| 720-375 | Denver | Denver | Wireless |
| 720-524 | Denver | Denver | Landline |
| 720-521 | Denver | Denver | Wireless |
| 720-935 | Denver | Denver | Wireless |
| 720-358 | Hudson | Weld | Landline |
| 720-392 | Deer Trail | Arapahoe | Landline |
| 720-881 | Denver | Jefferson | Landline |
| 720-836 | Denver | Jefferson | Landline |