| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Isa | city | Gyeongbuk | Korea, Republic of (South) | 36.44 | 129.01 | 875 | 4019 |
| Isa-gol | city | Gyeongbuk | Korea, Republic of (South) | 36.44 | 128.23 | 164 | 27273 |
| Isa-ri | city | Gyeongbuk | Korea, Republic of (South) | 36.44 | 129.01 | 875 | 4019 |
| Isa-ri | city | Daejeon | Korea, Republic of (South) | 36.28 | 127.44 | 387 | 267289 |
| Isadong | city | Daejeon | Korea, Republic of (South) | 36.28 | 127.44 | 387 | 267289 |
| Isaengi | city | Chungnam | Korea, Republic of (South) | 36.56 | 126.36 | 62 | 4732 |
| Isan | city | Gyeongbuk | Korea, Republic of (South) | 36.28 | 128.07 | 830 | 5949 |
| Isan | city | Gyeonggi | Korea, Republic of (South) | 37.66 | 126.72 | 3 | 138754 |
| Isan-gol | city | Chungnam | Korea, Republic of (South) | 36.88 | 126.62 | 98 | 33211 |
| Isanmyo | city | Jeonbuk | Korea, Republic of (South) | 35.75 | 127.40 | 1240 | 4321 |
| Isanpo | city | Gyeonggi | Korea, Republic of (South) | 37.66 | 126.72 | 3 | 138754 |
| Isansugol | city | Gyeonggi | Korea, Republic of (South) | 37.85 | 127.01 | 347 | 40338 |
| Isari | city | Gyeongbuk | Korea, Republic of (South) | 35.72 | 128.81 | 830 | 8131 |
| Iseok-ri | city | Gyeonggi | Korea, Republic of (South) | 37.50 | 127.28 | 259 | 56632 |
| Iseolli | city | Gyeonggi | Korea, Republic of (South) | 37.36 | 127.42 | 872 | 22563 |
| Iseon-ri | city | Gyeonggi | Korea, Republic of (South) | 37.36 | 127.42 | 872 | 22563 |
| Iseongni | city | Gyeonggi | Korea, Republic of (South) | 37.50 | 127.28 | 259 | 56632 |
| Isil | city | Gyeongbuk | Korea, Republic of (South) | 36.31 | 128.28 | 177 | 9003 |
| Isil | city | Gyeongbuk | Korea, Republic of (South) | 35.64 | 128.65 | 830 | 7750 |
| Isil-gol | city | Gangwon | Korea, Republic of (South) | 38.33 | 127.55 | 948 | 9988 |
| Isilmi | city | Gyeongbuk | Korea, Republic of (South) | 35.95 | 128.14 | 1049 | 6456 |
| Isimaetdeung | city | Jeonbuk | Korea, Republic of (South) | 35.36 | 126.64 | 173 | 9067 |
| Isimul | city | Jeonnam | Korea, Republic of (South) | 35.04 | 126.80 | 42 | 154322 |
| Isipkong-ni | city | Gangwon | Korea, Republic of (South) | 37.90 | 127.79 | 830 | 87739 |
| Iso-ri | city | Gyeongbuk | Korea, Republic of (South) | 35.72 | 128.81 | 830 | 8131 |
| Iso-ri | city | Gyeongbuk | Korea, Republic of (South) | 36.39 | 127.96 | 872 | 5960 |
| Isolmi | city | Gyeongbuk | Korea, Republic of (South) | 35.68 | 128.71 | 410 | 7852 |
| Ison | city | Gwangju | Korea, Republic of (South) | 35.13 | 126.91 | 216 | 393128 |
| Isong-ni | city | Gyeonggi | Korea, Republic of (South) | 37.50 | 127.28 | 259 | 56632 |
| Isu | city | Gyeongnam | Korea, Republic of (South) | 34.97 | 128.73 | 0 | 9318 |
| Isujeong | city | Gyeongnam | Korea, Republic of (South) | 35.57 | 128.37 | 383 | 8995 |
| Isŏl-li | city | Gyeonggi | Korea, Republic of (South) | 37.36 | 127.42 | 872 | 22563 |
| Isŏltang | city | Gangwon | Korea, Republic of (South) | 37.84 | 128.85 | 13 | 26186 |
| Isŏm | city | Jeonnam | Korea, Republic of (South) | 34.56 | 127.21 | 3 | 9322 |
| Isŏng-ni | city | Jeonnam | Korea, Republic of (South) | 34.22 | 127.25 | 55 | 1296 |
| Isŏng-ni | city | Jeonbuk | Korea, Republic of (South) | 35.80 | 127.05 | 183 | 115703 |