| Locality | Postal Code |
|---|---|
| Postal/ZIP Codes in Buksang-myeon, Geochang (북상면) | 50100, 50101, 50102 |
| Postal/ZIP Codes in Gabuk-myeon, Geochang (가북면) | 50116, 50117, 50120 |
| Postal/ZIP Codes in Gajo-myeon, Geochang (가조면) | 50118, 50119, 50120 |
| Postal/ZIP Codes in Geochang-eup, Geochang (거창읍) | 50110, 50124, 50125, 50126, 50127, … |
| Postal/ZIP Codes in Goje-myeon, Geochang (고제면) | 50111, 50112 |
| Postal/ZIP Codes in Jusang-myeon, Geochang (주상면) | 50114, 50115 |
| Postal/ZIP Codes in Mari-myeon, Geochang (마리면) | 50105, 50106, 50107, 50108, 50109, … |
| Postal/ZIP Codes in Namha-myeon, Geochang (남하면) | 50121, 50122, 50123 |
| Postal/ZIP Codes in Namsang-myeon, Geochang (남상면) | 50146, 50147, 50148, 50149, 50150, … |
| Postal/ZIP Codes in Sinwon-myeon, Geochang (신원면) | 50151, 50153 |
| Postal/ZIP Codes in Ungyang-myeon, Geochang (웅양면) | 50113 |
| Postal/ZIP Codes in Wicheon-myeon, Geochang (위천면) | 50103, 50104 |