| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Obong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.5877778 | 126.6044444 | 160 | 26740 |
| Och'on | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4333333 | 126.5166667 | 154 | 18486 |
| Och'on | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4363889 | 126.5227778 | 249 | 18486 |
| Och'on | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7666667 | 126.7333333 | 32 | 26684 |
| Och'ŏn | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4333333 | 126.5166667 | 154 | 18486 |
| Och'ŏn | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4363889 | 126.5227778 | 249 | 18486 |
| Odo | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9333333 | 126.65 | 104 | 20149 |
| Odong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4833333 | 126.6666667 | 337 | 26782 |
| Odong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.15 | 126.8 | 144 | 26913 |
| Odŏng-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.15 | 126.8 | 144 | 26913 |
| Oe-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9 | 126.3 | 95 | 9849 |
| Oeam | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4333333 | 127.2 | 301 | 154058 |
| Oeam-gol | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7333333 | 127.0166667 | 295 | 26698 |
| Oeam-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7333333 | 127.0166667 | 295 | 26698 |
| Oedon-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6666667 | 126.9166667 | 495 | 26712 |
| Oedun-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6666667 | 126.9166667 | 495 | 26712 |
| Oegejong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.65 | 126.75 | 223 | 26726 |
| Oegejŏng-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.65 | 126.75 | 223 | 26726 |
| Oegyejong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.65 | 126.75 | 223 | 26726 |
| Oegyejŏng-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.65 | 126.75 | 223 | 26726 |
| Oeho-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8333333 | 126.3333333 | 52 | 20099 |
| Oehwangsan | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.75 | 126.95 | 232 | 26698 |
| Oejanggodo-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3913889 | 126.335 | 3 | 6635 |
| Oejigok | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4 | 126.9833333 | 173 | 26810 |
| Oejongsan | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7 | 126.1666667 | 111 | 8041 |
| Oejuryong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6666667 | 126.75 | 101 | 26712 |
| Oejuryŏng-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6666667 | 126.75 | 101 | 26712 |
| Oejŏngsan | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7 | 126.1666667 | 111 | 8041 |
| Oep'o | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.2833333 | 239 | 18008 |
| Oep'o-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.2833333 | 239 | 18008 |
| Oesong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.85 | 126.4833333 | 150 | 23652 |
| Oesong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3 | 126.5833333 | 65 | 20551 |
| Oesong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3333333 | 126.5833333 | 177 | 20551 |
| Oesong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.85 | 126.4833333 | 150 | 23652 |
| Oesŏng | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.85 | 126.4833333 | 150 | 23652 |
| Oesŏng-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.85 | 126.4833333 | 150 | 23652 |
| Oettummal | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6666667 | 126.6833333 | 36 | 26712 |
| Oettŭmmal | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6666667 | 126.6833333 | 36 | 26712 |
| Oeyondo | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.2333333 | 126.0833333 | 0 | 608 |
| Oeyondo-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.2333333 | 126.0833333 | 0 | 608 |
| Ogok | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7833333 | 126.3 | 170 | 22822 |
| Ogong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7833333 | 126.3 | 170 | 22822 |
| Ogong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9333333 | 126.75 | 3 | 18504 |
| Ogong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8225 | 127.2761111 | 367 | 25865 |
| Ogyong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6166667 | 126.7 | 52 | 26740 |
| Ogyong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6166667 | 126.7 | 52 | 26740 |
| Ohang-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1 | 127.3666667 | 980 | 27249 |
| Ohang-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7166667 | 126.55 | 101 | 26496 |
| Ohang-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1 | 127.3666667 | 980 | 27249 |
| Ojae | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0797222 | 127.5933333 | 528 | 24587 |
| Ojae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0797222 | 127.5933333 | 528 | 24587 |
| Oji-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9577778 | 126.3569444 | 19 | 10350 |
| Ojigok | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.6333333 | 164 | 26630 |
| Ojigok | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.6333333 | 164 | 26630 |
| Ojigol | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.6333333 | 164 | 26630 |
| Ojigol | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.6333333 | 164 | 26630 |
| Ojisil | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.6333333 | 164 | 26630 |
| Okho-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.7166667 | 91 | 26656 |
| Okhyon-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9333333 | 126.5666667 | 114 | 21986 |
| Okhyŏn-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9333333 | 126.5666667 | 114 | 21986 |
| Okkae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4 | 126.6333333 | 170 | 26810 |
| Okkae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4833333 | 126.7333333 | 164 | 26782 |
| Okke-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7 | 126.65 | 167 | 26712 |
| Okkol-li | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1666667 | 126.8333333 | 334 | 26885 |
| Okkong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1666667 | 126.8333333 | 334 | 26885 |
| Okkum-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7833333 | 126.8166667 | 3 | 26440 |
| Okkye | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4 | 126.6333333 | 170 | 26810 |
| Okkye-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4 | 126.6333333 | 170 | 26810 |
| Okkye-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7 | 126.65 | 167 | 26712 |
| Okkye-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4833333 | 126.7333333 | 164 | 26782 |
| Okkŭm-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7833333 | 126.8166667 | 3 | 26440 |
| Okp'o-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0405556 | 126.7819444 | 3 | 27568 |
| Oksan-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.0666667 | 126.6666667 | 101 | 23417 |
| Oksil-li | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1666667 | 126.8333333 | 334 | 26885 |
| Oktae-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7166667 | 126.5166667 | 22 | 24396 |
| Omhyon-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4166667 | 126.6833333 | 482 | 26796 |
| Ommok-tong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.6333333 | 126.8833333 | 183 | 26726 |
| Omong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8072222 | 126.9322222 | 26 | 26304 |
| Omong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8833333 | 127.2166667 | 291 | 64813 |
| Omsa-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.2891667 | 127.2352778 | 423 | 26853 |
| On-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7666667 | 126.8666667 | 52 | 26024 |
| Onch'ol-li | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3858333 | 127.2588889 | 498 | 64871 |
| Onch'ŏl-li | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3858333 | 127.2588889 | 498 | 64871 |
| Ongjong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9 | 126.8166667 | 0 | 15596 |
| Ongjŏng-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.9 | 126.8166667 | 0 | 15596 |
| Onham-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.35 | 126.7833333 | 501 | 26824 |
| Onjing-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3755556 | 126.8005556 | 698 | 26810 |
| Onjong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7333333 | 126.4166667 | 22 | 22320 |
| Onjong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7333333 | 126.4166667 | 22 | 22320 |
| Onsu | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3 | 126.75 | 239 | 26838 |
| Onsu-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3 | 126.75 | 239 | 26838 |
| Ont'am-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.35 | 126.7833333 | 501 | 26824 |
| Onyang | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7836111 | 127.041667 | 22 | 26684 |
| Onyo | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7836111 | 127.041667 | 22 | 26684 |
| Onyō | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7836111 | 127.041667 | 22 | 26684 |
| Orak-tong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.55 | 126.3833333 | 0 | 5804 |
| Oryong-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8166667 | 126.8666667 | 29 | 23298 |
| Oryong-gol | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.45 | 126.8833333 | 892 | 26796 |
| Oryong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8166667 | 126.8666667 | 29 | 23298 |
| Oryong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.45 | 126.8833333 | 892 | 26796 |
| Osa | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.55 | 126.4669444 | 26 | 12774 |
| Osa | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.95 | 126.75 | 32 | 18504 |
| Osa-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.55 | 126.4669444 | 26 | 12774 |
| Osa-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.95 | 126.75 | 32 | 18504 |
| Osal-li | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3880556 | 126.9636111 | 236 | 26810 |
| Osalmoe | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3880556 | 126.9636111 | 236 | 26810 |
| Osan-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.85 | 126.7333333 | 3 | 26656 |
| Osan-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3880556 | 126.9636111 | 236 | 26810 |
| Osan-ri | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8666667 | 126.3666667 | 0 | 14536 |
| Osen | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8166667 | 126.6666667 | 91 | 26670 |
| Osil-li | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4833333 | 126.8333333 | 433 | 26782 |
| Osondae | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4833333 | 126.9833333 | 695 | 26782 |
| Osong-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7941667 | 126.3580556 | 29 | 20537 |
| Osongjong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8166667 | 127.2666667 | 360 | 25865 |
| Osongjŏng | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.8166667 | 127.2666667 | 360 | 25865 |
| Osul-li | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4833333 | 126.8333333 | 433 | 26782 |
| Osŏndae | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4833333 | 126.9833333 | 695 | 26782 |
| Otchom | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4166667 | 126.4 | 3 | 12827 |
| Otchŏm | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.4166667 | 126.4 | 3 | 12827 |
| Oum-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7833333 | 126.3666667 | 101 | 23156 |
| Oun | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7833333 | 126.3666667 | 101 | 23156 |
| Oun-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7833333 | 126.3666667 | 101 | 23156 |
| Oun-dong | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.1 | 126.7 | 127 | 26074 |
| Oun-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3666667 | 127.1666667 | 262 | 26824 |
| Oundol | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7572222 | 126.1269444 | 29 | 11225 |
| Oundul | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.7572222 | 126.1269444 | 29 | 11225 |
| Oŭn-ni | city | Ch'ungch'ong-namdo | Korea, Republic of (South) | 36.3666667 | 127.1666667 | 262 | 26824 |