| Locality | Post Code |
|---|---|
| Bison, Garfield | 73720 |
| Carrier, Garfield | 73727 |
| Covington, Garfield | 73730 |
| Douglas, Garfield | 73733 |
| Drummond, Garfield | 73735 |
| Enid, Garfield | 73701, 73703, 73705 |
| Fairmont, Garfield | 73736 |
| Garber, Garfield | 73738 |
| Hillsdale, Garfield | 73743 |
| Hunter, Garfield | 74640 |
| Kremlin, Garfield | 73753 |
| Lahoma, Garfield | 73754 |
| North Enid, Garfield | 73701 |
| Waukomis, Garfield | 73773 |