| City/Town | Area Code | Zip Code | County | Code |
| Eagle City | 405 | 73658 | Dewey | 40043 |
| Eagletown | 405 | 74734 | McCurtain | 40089 |
| Eakly | 405 | 73033 | Caddo | 40015 |
| Earlsboro | 405 | 74840 | Pottawatomie | 40125 |
| Edmond | 405 | 73013 | Oklahoma | 40109 |
| 73034 | ||||
| 73083 | ||||
| Eldorado | 405 | 73537 | Jackson | 40065 |
| Elgin | 405 | 73538 | Comanche | 40031 |
| Elk City | 405 | 73644 | Beckham | 40009 |
| 73648 | ||||
| Elmer | 405 | 73539 | Jackson | 40065 |
| Elmore Clty | 405 | 73035 | Garvin | 40049 |
| Elmwood | 405 | 73932 | Beaver | 40007 |
| El Reno | 405 | 73036 | Canadian | 40017 |
| Enid | 405 | 73701 | Garfield | 40047 |
| 73706 | ||||
| Erick | 405 | 73645 | Beckham | 40009 |
| Eucha | 918 | 74342 | Delaware | 40041 |
| Eufaula | 918 | 74432 | McIntosh | 40091 |
| Eva | 405 | 73939 | Texas | 40139 |