| Postal/ZIP Codes in Bieungdo-Dong, Gunsan (비응도동) |
54001, 54002, 54003, 54159 |
| Postal/ZIP Codes in Changseong-Dong, Gunsan (창성동) |
54025, 54028 |
| Postal/ZIP Codes in Daemyeong-Dong, Gunsan (대명동) |
54029, 54038, 54040 |
| Postal/ZIP Codes in Daeya-myeon, Gunsan (대야면) |
54059, 54060, 54061, 54062, 54063, … |
| Postal/ZIP Codes in Dongheungnam-Dong, Gunsan (동흥남동) |
54040, 54041, 54083 |
| Postal/ZIP Codes in Dunyul-Dong, Gunsan (둔율동) |
54028 |
| Postal/ZIP Codes in Gaebok-Dong, Gunsan (개복동) |
54025, 54028 |
| Postal/ZIP Codes in Gaejeong-Dong, Gunsan (개정동) |
54064, 54067, 54068, 54070 |
| Postal/ZIP Codes in Gaejeong-myeon, Gunsan (개정면) |
54045, 54061, 54062, 54064, 54065, … |
| Postal/ZIP Codes in Gaesa-Dong, Gunsan (개사동) |
54157, 54159, 54168, 54169 |
| Postal/ZIP Codes in Geum-Dong, Gunsan (금동) |
54000, 54018, 54020 |
| Postal/ZIP Codes in Geumam-Dong, Gunsan (금암동) |
54026, 54030, 54031 |
| Postal/ZIP Codes in Geumgwang-Dong, Gunsan (금광동) |
54024, 54114 |
| Postal/ZIP Codes in Guam-Dong, Gunsan (구암동) |
54042, 54043, 54044, 54072 |
| Postal/ZIP Codes in Gyeongam-Dong, Gunsan (경암동) |
54030, 54031, 54032, 54033, 54034, … |
| Postal/ZIP Codes in Gyeongjang-Dong, Gunsan (경장동) |
54036, 54037, 54040, 54076, 54077, … |
| Postal/ZIP Codes in Haemang-Dong, Gunsan (해망동) |
54017, 54018, 54019 |
| Postal/ZIP Codes in Hoehyeon-myeon, Gunsan (회현면) |
54177, 54178, 54179 |
| Postal/ZIP Codes in Impi-myeon, Gunsan (임피면) |
54055, 54056, 54057, 54058, 54059 |
| Postal/ZIP Codes in Jangjae-Dong, Gunsan (장재동) |
54038, 54039, 54040, 54041 |
| Postal/ZIP Codes in Jangmi-Dong, Gunsan (장미동) |
54021, 54026 |
| Postal/ZIP Codes in Jigok-Dong, Gunsan (지곡동) |
54098, 54102, 54103, 54104, 54105, … |
| Postal/ZIP Codes in Jochon-Dong, Gunsan (조촌동) |
54033, 54043, 54044, 54072, 54073, … |
| Postal/ZIP Codes in Jukseong-Dong, Gunsan (죽성동) |
54027 |
| Postal/ZIP Codes in Jung-Dong, Gunsan (중동) |
54030, 54031 |
| Postal/ZIP Codes in Jungangno 1 (Il)-Ga, Gunsan (중앙로1가) |
54021, 54022, 54025, 54026, 54027, … |