Oklahoma area codes
| 405 | Oklahoma (Oklahoma City, Stillwater, Edmond, Norman, Shawnee, Chickasha and central Oklahoma) |
| 580 | Oklahoma (Ponca City, Guymon, Enid, Lawton, Ardmore, Sayre, Elk City, and southern and western Oklahoma) |
| 918 | Oklahoma (Tulsa, Bartlesville, McAlester, Muskogee, Henryetta and northeastern Oklahoma) |
