| 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 |
|---|---|---|---|
| 720-259 | Denver | Denver | Landline |
| 720-778 | Brighton | Weld | Landline |
| 720-573 | Denver | Denver | Landline |
| 720-382 | Denver | Denver | Landline |
| 720-405 | Denver | Denver | Landline |
| 720-500 | Denver | Denver | Landline |
| 720-562 | Denver | Denver | Landline |
| 720-391 | Denver | Denver | Wireless |
| 720-212 | Denver | Denver | Landline |
| 720-989 | Aurora | Arapahoe | Wireless |
| 720-675 | Denver | Denver | Wireless |
| 720-979 | Aurora | Arapahoe | Wireless |
| 720-980 | Aurora | Arapahoe | Wireless |
| 720-941 | Denver | Denver | Landline |
| 720-248 | Aurora | Arapahoe | Landline |
| 720-452 | Denver | Denver | Landline |
| 720-966 | Fort Lupton | Weld | Wireless |
| 720-630 | Denver | Denver | Wireless |
| 720-268 | Denver | Denver | Landline |
| 720-839 | Aurora | Arapahoe | Wireless |