| 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 |
|---|---|---|---|
| 720-219 | Denver | Denver | Wireless |
| 720-877 | Denver | Jefferson | Landline |
| 720-325 | Denver | Denver | Wireless |
| 720-499 | Denver | Denver | Wireless |
| 720-556 | Denver | Denver | Wireless |
| 720-886 | Denver | Denver | Landline |
| 720-862 | Arvada | Jefferson | Landline |
| 720-415 | Denver | Denver | Wireless |
| 720-430 | Denver | Denver | Landline |
| 720-226 | Denver | Denver | Landline |
| 720-683 | Fort Lupton | Weld | Landline |
| 720-352 | Denver | Denver | Wireless |
| 720-708 | Denver | Denver | Landline |
| 720-447 | Denver | Denver | Wireless |
| 720-251 | Denver | Denver | Landline |
| 720-692 | Denver | Denver | Wireless |
| 720-951 | Denver | Denver | Wireless |
| 720-414 | Jamestown | Boulder | Landline |
| 720-875 | Denver | Denver | Landline |
| 720-895 | Denver | Denver | Landline |