| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Jakdong | city | Korea, Republic of (South) | 35.26 | 126.85 | 127 | 57728 | |
| Jangchon | city | Korea, Republic of (South) | 37.90 | 126.69 | 36 | 18545 | |
| Jangdan | city | Korea, Republic of (South) | 37.91 | 126.69 | 75 | 18328 | |
| Jangsongdong | city | Korea, Republic of (South) | 38.30 | 127.14 | 830 | 9170 | |
| Jeommal | city | Korea, Republic of (South) | 38.06 | 126.88 | 321 | 9136 | |
| Jieumgol | city | Korea, Republic of (South) | 37.86 | 126.70 | 36 | 19398 | |
| Jigyeong | city | Korea, Republic of (South) | 35.97 | 128.74 | 1102 | 66021 | |
| Jigyeongso | city | Korea, Republic of (South) | 36.24 | 127.51 | 830 | 42155 | |
| Jikgol | city | Korea, Republic of (South) | 37.87 | 126.71 | 32 | 19398 | |
| Jinaedong | city | Korea, Republic of (South) | 35.93 | 128.44 | 157 | 25379 | |
| Jinchon | city | Korea, Republic of (South) | 38.07 | 126.88 | 347 | 9811 | |
| Jirodong | city | Korea, Republic of (South) | 38.14 | 126.97 | 830 | 8462 | |
| Jitsuhei-ri | city | Korea, Republic of (South) | 35.33 | 126.83 | 875 | 8493 | |
| Josa | city | Korea, Republic of (South) | 35.18 | 127.40 | 830 | 8776 | |
| Josan | city | Korea, Republic of (South) | 37.85 | 126.69 | 22 | 17344 | |
| Jotei | city | Korea, Republic of (South) | 35.92 | 126.63 | 3 | 68638 | |
| Jungmasan | city | Korea, Republic of (South) | 38.29 | 127.17 | 830 | 8437 | |
| Jutsuka | city | Korea, Republic of (South) | 34.98 | 127.92 | 0 | 5405 | |
| Juulgil | city | Korea, Republic of (South) | 37.85 | 127.55 | 177 | 1336 | |
| Jwacho | city | Korea, Republic of (South) | 37.89 | 126.69 | 32 | 17851 |