| City/Town | Area Code | Zip Code | County | Code |
| Gage | 405 | 73843 | Ellis | 40045 |
| Gans | 918 | 74936 | Sequoyah | 40135 |
| Garber | 405 | 73738 | Garfield | 40047 |
| Garvin | 405 | 74736 | McCurtain | 40089 |
| Gate | 405 | 73844 | Beaver | 40007 |
| Geary | 405 | 73040 | Blaine | 40011 |
| Canadian | 40017 | |||
| Gene Autry | 405 | 73436 | Carter | 40019 |
| Geronimo | 405 | 73543 | Comanche | 40031 |
| Glencoe | 405 | 74032 | Payne | 40119 |
| Glenpool | 918 | 74033 | Tulsa | 40143 |
| Golden | 405 | 74737 | McCurtain | 40089 |
| Goltry | 405 | 73739 | Alfalfa | 40003 |
| Goodwell | 405 | 73939 | Texas | 40139 |
| Gore | 918 | 74435 | Sequoyah | 40135 |
| Gotebo | 405 | 73041 | Kiowa | 40075 |
| Gould | 405 | 73544 | Harmon | 40057 |
| Gowen | 918 | 74545 | Latimer | 40077 |
| Gracemont | 405 | 73042 | Caddo | 40015 |
| Grady | 405 | 73569 | Jefferson | 40067 |
| Graham | 405 | 73437 | Carter | 40019 |
| Grainola | 918 | 74652 | Osage | 40113 |
| Grandfield | 405 | 73546 | Tillman | 40141 |
| Granite | 405 | 73547 | Greer | 40055 |
| Grant | 405 | 74738 | Choctaw | 40023 |
| Greenfield | 405 | 73043 | Blaine | 40011 |
| Griggs | 405 | 73949 | Cimarron | 40025 |
| Grimes | 405 | 73628 | Roger Mills | 40129 |
| Grove | 918 | 74344 | Delaware | 40041 |
| Guthrie | 405 | 73044 | Logan | 40083 |
| Guymon | 405 | 73942 | Texas | 40139 |