| 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 |
|---|---|---|---|
| 720-277 | Arvada | Jefferson | Landline |
| 720-387 | Denver | Denver | Landline |
| 720-670 | Denver | Denver | Wireless |
| 720-363 | Denver | Denver | Wireless |
| 720-613 | Hudson | Weld | Landline |
| 720-770 | Sedalia | Douglas | Landline |
| 720-660 | Denver | Denver | Wireless |
| 720-465 | Denver | Denver | Wireless |
| 720-932 | Denver | Denver | Landline |
| 720-652 | Longmont | Boulder | Landline |
| 720-606 | Fort Lupton | Weld | Wireless |
| 720-625 | Denver | Denver | Landline |
| 720-371 | Denver | Denver | Wireless |
| 720-354 | Denver | Denver | Landline |
| 720-598 | Denver | Denver | Landline |
| 720-361 | Denver | Denver | Landline |
| 720-737 | Denver | Denver | Wireless |
| 720-965 | Denver | Denver | Wireless |
| 720-365 | Denver | Denver | Wireless |
| 720-488 | Denver | Denver | Landline |