| City/Town | Area Code | Zip Code | County | Code |
| Taft | 918 | 74463 | Muskogee | 40101 |
| Tahlequah | 918 | 74464 | Cherokee | 40021 |
| 74465 | ||||
| Talala | 918 | 74080 | Rogers | 40131 |
| Talihina | 918 | 74571 | LeFlore | 40079 |
| Taloga | 405 | 73667 | Dewey | 40043 |
| Tatums | 405 | 73087 | Carter | 40019 |
| Tecumseh | 405 | 74873 | Pottawatomie | 40125 |
| Temple | 405 | 73568 | Cotton | 40033 |
| Terlton | 918 | 74081 | Pawnee | 40117 |
| Terral | 405 | 73569 | Jetferson | 40067 |
| Texhoma | 405 | 73949 | Texas | 40139 |
| Taxola | 405 | 73668 | Beckham | 40009 |
| Thackersville | 405 | 73459 | Love | 40085 |
| Thomas | 405 | 73669 | Custer | 40039 |
| Tinker AFB | 405 | 73145 | Oklahoma | 40109 |
| Tipton | 405 | 73570 | Tillman | 40141 |
| Tishomingo | 405 | 73460 | Johnston | 40069 |
| Tom | 405 | 74740 | McCurtain | 40089 |
| Tonkawa | 405 | 74653 | Kay | 40071 |
| Tribbey | 405 | 74878 | Pottawatomie | 40125 |
| Trousdale | 405 | 74878 | Pottowatomie | 40125 |
| Tryon | 918 | 74875 | Lincoln | 40081 |
| Tullahussee | 918 | 74466 | Wagoner | 40145 |
| Tulsa | 918 | 74100 | Tulsa | 40143 |
| thru | ||||
| 74172 | ||||
| Tupelo | 405 | 74572 | Coal | 40029 |
| Turley | 918 | 74156 | Tulsa | 40143 |
| Turpin | 405 | 73950 | Beaver | 40007 |
| Tushka | 405 | 74525 | Atoka | 40005 |
| Tuskahoma | 918 | 74574 | Pushmataha | 40127 |
| Tussy | 405 | 73088 | Carter | 40019 |
| Tuttle | 405 | 73089 | Grady | 40051 |
| Twin Oaks | 918 | 74368 | Delaware | 40041 |
| Tyrone | 918 | 73951 | Texas | 40139 |