| Area Code | 817 |
| State | Texas |
| Current Time in Area Code 817 | 817> CDT |
| Timezone | Central Daylight Time |
| Regional Market Area | Metro Dallas-Fort Worth |
| Metro Area(s) | Granbury, TX |
| Population (2020) | 2500387 |
| Adjacent Area Codes | 214,254,469,682,940,945,972 |
| Overlay Area Codes | 682 |
| Hood County |
| Johnson County |
| Parker County |
| Tarrant County |
| Arlington |
| Bedford |
| Burleson |
| Cleburne |
| Euless |
| Flower Mound |
| Fort Worth |
| Grapevine |
| Haltom City |
| Hurst |
| Keller |
| Mansfield |
| North Richland Hills |
| Southlake |
| Weatherford |