| City/Town | Area Code | Zip Code | County | Code |
| Ralston | 918 | 74650 | Pawnee | 40117 |
| Ramona | 918 | 74061 | Washington | 40147 |
| Randlett | 405 | 73562 | Cotton | 40033 |
| Ratliff City | 405 | 73081 | Carter | 40019 |
| Rattan | 405 | 74562 | Pushmataha | 40127 |
| Ravia | 405 | 73455 | Johnston | 40069 |
| Redbird | 918 | 74458 | Wagoner | 40145 |
| Red Oak | 918 | 74563 | Latimer | 40077 |
| Red Rock | 405 | 74651 | Noble | 40103 |
| Reed | 405 | 73554 | Greer | 40055 |
| Renfrow | 405 | 73759 | Grant | 40053 |
| Rentiesvilie | 918 | 74459 | McIntosh | 40091 |
| Reydon | 405 | 73660 | Roger Mills | 40129 |
| Ringling | 405 | 73456 | Jefferson | 40067 |
| Ringold | 405 | 74754 | McCurtain | 40089 |
| Ringwood | 405 | 73768 | Major | 40093 |
| Ripley | 918 | 74062 | Payne | 40119 |
| Rock Island | 918 | 74932 | LeFlore | 40079 |
| Rocky | 405 | 73661 | Washita | 40149 |
| Roff | 405 | 74865 | Pontotoc | 40123 |
| Roland | 918 | 74954 | Sequoyah | 40135 |
| Roosevelt | 405 | 73564 | Kiowa | 40075 |
| Rose | 918 | 74364 | Mayes | 40097 |
| Rosdale | 405 | 74831 | McClain | 40087 |
| Rosston | 405 | 73855 | Harper | 40059 |
| Rubottom | 405 | 73463 | Carter | 40019 |
| Rufe | 405 | 74755 | McCurtain | 40089 |
| Rush Springs | 405 | 73082 | Grady | 40051 |
| Ryan | 405 | 73565 | Jefferson | 40067 |