| City/Town | Area Code | Zip Code | County | Code |
| Achille | 405 | 74720 | Bryan | 40013 |
| Ada | 405 | 74799 | Pontotoc | 40123 |
| Adair | 918 | 74330 | Mayes | 40097 |
| Adams | 405 | 73901 | Texas | 40139 |
| Adamson | 918 | 74547 | Pittsburg | 40121 |
| Addington | 405 | 73520 | Jefferson | 40067 |
| Afton | 918 | 74331 | Ottawa & | 40115 |
| Delaware | 40041 | |||
| Agra | 918 | 74824 | Lincoln | 40081 |
| Albany | 405 | 74721 | Bryan | 40013 |
| Albert | 405 | 73001 | Caddo | 40015 |
| Albion | 918 | 74521 | Pushmataha | 40127 |
| Alderson | 918 | 74522 | Pittsburg | 40121 |
| Alex | 405 | 73002 | Grady | 40051 |
| Aline | 405 | 73716 | Alfalfa | 40003 |
| Allen | 405 | 74825 | Pontotoc & | 40123 |
| Hughes | 40063 | |||
| Alluwe | 918 | 74048 | Nowata | 40105 |
| Alma | 405 | 73533 | Stephens | 40137 |
| Altus | 405 | 73521 | Jackson | 40065 |
| 73523 | ||||
| Altus AFB | 405 | 73523 | Jackson | 40065 |
| Alva | 405 | 73717 | Woods | 40151 |
| Amber | 405 | 73004 | Grady | 40051 |
| Ames | 405 | 73718 | Major | 40093 |
| Amorita | 405 | 73719 | Alfalfa | 40003 |
| Anadarko | 405 | 73005 | Caddo | 40015 |
| Antlers | 405 | 74523 | Pushmataha | 40127 |
| Apache | 405 | 73006 | Caddo | 40015 |
| Arapaho | 405 | 73620 | Custer | 40039 |
| Arcadia | 405 | 73007 | Oklahoma | 40109 |
| Ardmore | 405 | 73401 | Carter | 40019 |
| 73403 | ||||
| Arkoma | 918 | 74901 | LeFlore | 40079 |
| Arnett | 405 | 73832 | Ellis | 40045 |
| Asher | 405 | 74826 | Pottawatomie | 40125 |
| Ashland | 918 | 74570 | Pittsburg | 40121 |
| Atoka | 405 | 74525 | Atoka | 40005 |
| 74542 | ||||
| Atwood | 405 | 74827 | Hughes | 40063 |
| Avant | 918 | 74001 | Osage | 40113 |
| Avard | 405 | 73717 | Woods | 40151 |