| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| On'gunemi | city | Gyeongbuk | Korea, Republic of (South) | 36.54 | 129.12 | 879 | 3126 |
| On-gol | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.41 | 157 | 4072 |
| Onae | city | Gyeongbuk | Korea, Republic of (South) | 36.79 | 128.74 | 830 | 8065 |
| Onch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Onch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 37.08 | 129.29 | 830 | 4727 |
| Onch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.72 | 129.34 | 830 | 6705 |
| Onchong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Onch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Onch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 37.08 | 129.29 | 830 | 4727 |
| Onch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.72 | 129.34 | 830 | 6705 |
| Ong-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.60 | 128.37 | 347 | 7204 |
| Ongch'on | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Ongch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.68 | 128.70 | 830 | 7487 |
| Ongch'on-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Ongchon-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.72 | 128.70 | 1056 | 11924 |
| Ongch’ŏn | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Ongch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.68 | 128.70 | 830 | 7487 |
| Ongch’ŏn-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 128.70 | 830 | 7944 |
| Onggidongmak | city | Gyeongbuk | Korea, Republic of (South) | 36.52 | 129.04 | 830 | 3844 |
| Onggijom | city | Gyeongbuk | Korea, Republic of (South) | 37.01 | 129.38 | 29 | 5646 |
| Onggijom | city | Gyeongbuk | Korea, Republic of (South) | 36.89 | 129.37 | 410 | 6361 |
| Onggima | city | Gyeongbuk | Korea, Republic of (South) | 36.59 | 128.65 | 830 | 34566 |
| Onggima | city | Gyeongbuk | Korea, Republic of (South) | 36.44 | 129.07 | 984 | 4172 |
| Onggudongmak | city | Gyeongbuk | Korea, Republic of (South) | 36.73 | 129.38 | 206 | 6705 |
| Ongguma | city | Gyeongbuk | Korea, Republic of (South) | 36.59 | 128.65 | 830 | 34566 |
| Ongjom | city | Gyeongbuk | Korea, Republic of (South) | 36.47 | 129.07 | 925 | 4149 |
| Ongju-gol | city | Gyeongbuk | Korea, Republic of (South) | 36.67 | 129.39 | 830 | 4692 |
| Ongjŏm-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.47 | 129.07 | 925 | 4149 |
| Ongjŏm-ni | city | Gyeongbuk | Korea, Republic of (South) | 36.48 | 129.07 | 954 | 4091 |
| Ongnyol-li | city | Gyeongbuk | Korea, Republic of (South) | 35.91 | 128.22 | 830 | 8344 |
| Ongnyu-ri | city | Gyeongbuk | Korea, Republic of (South) | 36.48 | 129.29 | 1115 | 0 |
| Ongnyul-tong | city | Gyeongbuk | Korea, Republic of (South) | 36.17 | 128.10 | 830 | 40705 |
| Ongnyŏam | city | Gyeongbuk | Korea, Republic of (South) | 36.32 | 129.27 | 830 | 5814 |
| Ongon-dong | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.41 | 157 | 4072 |
| Onhye | city | Gyeongbuk | Korea, Republic of (South) | 36.75 | 128.83 | 830 | 2865 |
| Onhye-dong | city | Gyeongbuk | Korea, Republic of (South) | 36.75 | 128.83 | 830 | 2865 |
| Onjong-dong | city | Gyeongbuk | Korea, Republic of (South) | 37.08 | 129.29 | 830 | 4727 |
| Onjong-ni | city | Gyeongbuk | Korea, Republic of (South) | 36.71 | 129.34 | 830 | 6465 |
| Onmak | city | Gyeongbuk | Korea, Republic of (South) | 35.64 | 128.84 | 246 | 7748 |
| Onmang-ni | city | Gyeongbuk | Korea, Republic of (South) | 35.64 | 128.84 | 246 | 7748 |
| Onnae | city | Gyeongbuk | Korea, Republic of (South) | 35.93 | 128.17 | 830 | 7795 |
| Onnamu-kol | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 127.97 | 1013 | 8137 |
| Onnamugol | city | Gyeongbuk | Korea, Republic of (South) | 36.69 | 127.97 | 1013 | 8137 |
| Onp'yong | city | Gyeongbuk | Korea, Republic of (South) | 36.00 | 128.03 | 830 | 4470 |
| Onp’yŏng | city | Gyeongbuk | Korea, Republic of (South) | 36.00 | 128.03 | 830 | 4470 |
| Onyang-ni | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.40 | 177 | 4667 |
| Onyangni | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.40 | 177 | 4667 |
| Onyo-ri | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.40 | 177 | 4667 |
| On’gŭnemi | city | Gyeongbuk | Korea, Republic of (South) | 36.54 | 129.12 | 879 | 3126 |