| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Okchol-li | city | Chungnam | Korea, Republic of (South) | 36.73 | 126.66 | 229 | 11291 |
| Okchonggyo | city | Chungnam | Korea, Republic of (South) | 36.80 | 126.99 | 3 | 65763 |
| Okgasil | city | Chungnam | Korea, Republic of (South) | 36.22 | 127.20 | 239 | 14970 |
| Okho-ri | city | Chungnam | Korea, Republic of (South) | 36.86 | 126.71 | 98 | 20824 |
| Okho-ri | city | Chungnam | Korea, Republic of (South) | 36.86 | 126.71 | 98 | 18966 |
| Okhyon-ni | city | Chungnam | Korea, Republic of (South) | 36.91 | 126.57 | 52 | 20586 |
| Okhyŏl-li | city | Chungnam | Korea, Republic of (South) | 36.91 | 126.57 | 52 | 20586 |
| Okhyŏn | city | Chungnam | Korea, Republic of (South) | 36.88 | 126.61 | 124 | 31467 |
| Okhyŏn | city | Chungnam | Korea, Republic of (South) | 36.40 | 126.96 | 52 | 7693 |
| Okkae-ri | city | Chungnam | Korea, Republic of (South) | 36.49 | 126.73 | 236 | 14097 |
| Okkae-ri | city | Chungnam | Korea, Republic of (South) | 36.40 | 126.63 | 170 | 29160 |
| Okkasil | city | Chungnam | Korea, Republic of (South) | 36.37 | 126.73 | 830 | 9099 |
| Okkasil | city | Chungnam | Korea, Republic of (South) | 36.35 | 126.84 | 137 | 8240 |
| Okke-ri | city | Chungnam | Korea, Republic of (South) | 36.71 | 126.65 | 200 | 10578 |
| Okkogae | city | Chungnam | Korea, Republic of (South) | 36.39 | 127.11 | 410 | 12286 |
| Okkol-li | city | Chungnam | Korea, Republic of (South) | 36.17 | 126.83 | 334 | 9145 |
| Okkong-ni | city | Chungnam | Korea, Republic of (South) | 36.17 | 126.83 | 334 | 9145 |
| Okkye | city | Chungnam | Korea, Republic of (South) | 36.40 | 126.63 | 170 | 29160 |
| Okkye-ri | city | Chungnam | Korea, Republic of (South) | 36.71 | 126.65 | 200 | 10578 |
| Okkye-ri | city | Chungnam | Korea, Republic of (South) | 36.49 | 126.73 | 236 | 14097 |
| Okkye-ri | city | Chungnam | Korea, Republic of (South) | 36.40 | 126.63 | 170 | 29160 |
| Okkye-ri | city | Chungnam | Korea, Republic of (South) | 36.41 | 126.63 | 134 | 25488 |
| Okkŭm-ni | city | Chungnam | Korea, Republic of (South) | 36.78 | 126.82 | 6 | 17685 |
| Okp'o-ri | city | Chungnam | Korea, Republic of (South) | 36.04 | 126.78 | 3 | 47358 |
| Okpung-ni | city | Chungnam | Korea, Republic of (South) | 36.05 | 126.70 | 45 | 41452 |
| Okp’o-ri | city | Chungnam | Korea, Republic of (South) | 36.04 | 126.78 | 3 | 47358 |
| Oksan | city | Chungnam | Korea, Republic of (South) | 36.32 | 126.72 | 377 | 10431 |
| Oksan-dong | city | Chungnam | Korea, Republic of (South) | 36.03 | 126.70 | 36 | 60541 |
| Oksan-ni | city | Chungnam | Korea, Republic of (South) | 36.07 | 126.67 | 101 | 18378 |
| Oksil-li | city | Chungnam | Korea, Republic of (South) | 36.17 | 126.83 | 334 | 9145 |
| Oksong-ni | city | Chungnam | Korea, Republic of (South) | 36.46 | 127.08 | 3 | 35569 |
| Oksŏ-ri | city | Chungnam | Korea, Republic of (South) | 36.29 | 126.61 | 830 | 24866 |
| Oktae-ri | city | Chungnam | Korea, Republic of (South) | 36.73 | 126.52 | 3 | 22554 |
| Oktaegi | city | Chungnam | Korea, Republic of (South) | 36.77 | 126.68 | 101 | 13891 |
| Oktong-dong | city | Chungnam | Korea, Republic of (South) | 36.03 | 126.70 | 36 | 60541 |
| Oktong-ni | city | Chungnam | Korea, Republic of (South) | 36.03 | 126.70 | 36 | 60541 |
| Oktong-ni | city | Chungnam | Korea, Republic of (South) | 36.31 | 126.61 | 223 | 34438 |