| Asan-myeon, Gochang (아산면) |
56445, 56452, 56453, 56454 |
| Buan-myeon, Gochang (부안면) |
56416, 56417, 56418 |
| Daesan-myeon, Gochang (대산면) |
56462, 56467, 56468, 56469 |
| Gochang-eup, Gochang (고창읍) |
56425, 56426, 56427, 56428, 56429, … |
| Gongeum-myeon, Gochang (공음면) |
56458, 56459, 56460, 56461, 56462, … |
| Gosu-myeon, Gochang (고수면) |
56444, 56445, 56446, 56447, 56453, … |
| Haeri-myeon, Gochang (해리면) |
56402, 56403, 56404, 56405, 56406 |
| Heungdeok-myeon, Gochang (흥덕면) |
56411, 56412, 56413, 56414, 56415 |
| Mujang-myeon, Gochang (무장면) |
56454, 56455, 56456, 56457, 56458, … |
| Sangha-myeon, Gochang (상하면) |
56405, 56407, 56408, 56409, 56410, … |
| Seongnae-myeon, Gochang (성내면) |
56419, 56420, 56421 |
| Seongsong-myeon, Gochang (성송면) |
56446, 56464, 56465, 56466, 56468 |
| Sillim-myeon, Gochang (신림면) |
56415, 56422, 56423, 56424, 56425 |
| Simwon-myeon, Gochang (심원면) |
56400, 56401, 56406 |