| Locality | Postal Code |
|---|---|
| Buksam-eup, Chilgok (북삼읍) | 39360, 39362, 39800, 39801, 39802, … |
| Dongmyeong-myeon, Chilgok (동명면) | 39854, 39855, 39856, 39857, 39858, … |
| Gasan-myeon, Chilgok (가산면) | 39849, 39850, 39851, 39852, 39853 |
| Gisan-myeon, Chilgok (기산면) | 39913, 39914, 39915 |
| Jicheon-myeon, Chilgok (지천면) | 39863, 39864, 39865, 39866, 39867, … |
| Seokjeok-eup, Chilgok (석적읍) | 39403, 39404, 39414, 39415, 39831, … |
| Waegwan-eup, Chilgok (왜관읍) | 39869, 39870, 39871, 39872, 39873, … |
| Yangmok-myeon, Chilgok (약목면) | 39804, 39805, 39817, 39818, 39819, … |