| Area Code | 918 |
| State | Oklahoma |
| Current Time in Area Code 918 | 918> CDT |
| Timezone | Central Daylight Time |
| Regional Market Area | Ft. Smith-Fayetteville-Springdale-Rogers Area Joplin-Pittsburg Area Metro Oklahoma City Tulsa Area |
| Metro Area(s) | Bartlesville, OK McAlester, OK Miami, OK Muskogee, OK Tahlequah, OK Tulsa, OK |
| Population (2020) | 1516292 |
| Adjacent Area Codes | 327,405,417,479,539,572,580,620,870 |
| Overlay Area Codes | 539 |
| Bartlesville |
| Broken Arrow |
| Muskogee |
| Owasso |
| Tulsa |