| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| 온곡 | city | Ulsan | Korea, Republic of (South) | 35.34 | 129.29 | 141 | 9714 |
| 온곡동 | city | Gyeongnam | Korea, Republic of (South) | 35.81 | 127.85 | 2509 | 4002 |
| 온골 | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.41 | 157 | 4072 |
| 온그네미 | city | Gyeongbuk | Korea, Republic of (South) | 36.54 | 129.12 | 879 | 3126 |
| 온기미 | city | Chungbuk | Korea, Republic of (South) | 37.08 | 127.94 | 314 | 24554 |
| 온동 | city | Jeonnam | Korea, Republic of (South) | 34.77 | 127.33 | 72 | 10861 |
| 온동 | city | Jeonnam | Korea, Republic of (South) | 34.84 | 127.28 | 127 | 20061 |
| 온동 | city | Daejeon | Korea, Republic of (South) | 36.24 | 127.32 | 387 | 407526 |
| 온방 | city | Gyeonggi | Korea, Republic of (South) | 37.34 | 127.50 | 167 | 39722 |
| 온상 | city | Incheon | Korea, Republic of (South) | 37.64 | 126.49 | 78 | 14067 |
| 온석동 | city | Chungnam | Korea, Republic of (South) | 36.80 | 126.47 | 42 | 51129 |
| 온석리 | city | Gyeonggi | Korea, Republic of (South) | 37.17 | 126.85 | 59 | 7548 |
| 온수 | city | Chungnam | Korea, Republic of (South) | 36.30 | 126.74 | 305 | 9549 |
| 온수고을 | city | Chungbuk | Korea, Republic of (South) | 36.98 | 127.85 | 830 | 32936 |
| 온수곡 | city | Incheon | Korea, Republic of (South) | 37.64 | 126.49 | 78 | 10473 |
| 온수골 | city | Gyeongnam | Korea, Republic of (South) | 35.12 | 128.44 | 154 | 112689 |
| 온수동 | city | Jeonnam | Korea, Republic of (South) | 34.74 | 127.09 | 830 | 5948 |
| 온수동 | city | Seoul | Korea, Republic of (South) | 37.67 | 127.06 | 154 | 1114061 |
| 온수동 | city | Jeonbuk | Korea, Republic of (South) | 35.93 | 127.07 | 49 | 78370 |
| 온수동 | city | Chungbuk | Korea, Republic of (South) | 36.95 | 127.42 | 314 | 10134 |
| 온수동 | city | Seoul | Korea, Republic of (South) | 37.50 | 126.82 | 127 | 1421568 |
| 온수동 | city | Jeonnam | Korea, Republic of (South) | 34.97 | 126.68 | 49 | 27428 |
| 온수동 (Onsu-dong) | city | Seoul | Korea, Republic of (South) | 37.50 | 126.82 | 127 | 1421568 |
| 온수리 | city | Incheon | Korea, Republic of (South) | 37.64 | 126.49 | 78 | 10473 |
| 온암리 | city | Chungnam | Korea, Republic of (South) | 36.37 | 126.78 | 830 | 8144 |
| 온야 | city | Jeonnam | Korea, Republic of (South) | 34.87 | 127.44 | 39 | 47116 |
| 온야 | city | Jeonnam | Korea, Republic of (South) | 34.89 | 127.32 | 62 | 35548 |
| 온양리 | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.40 | 177 | 4667 |
| 온양리 (Onyangni) | city | Gyeongbuk | Korea, Republic of (South) | 37.02 | 129.40 | 177 | 4667 |
| 온양머리 | city | Chungnam | Korea, Republic of (South) | 36.70 | 126.80 | 36 | 40455 |
| 온양온천1동 | city | Chungnam | Korea, Republic of (South) | 36.79 | 127.00 | 49 | 74171 |
| 온양온천2동 | city | Chungnam | Korea, Republic of (South) | 36.78 | 127.00 | 72 | 73511 |
| 온양터 | city | Chungbuk | Korea, Republic of (South) | 37.05 | 127.47 | 830 | 9907 |
| 온인 | city | Jeonnam | Korea, Republic of (South) | 34.55 | 126.55 | 49 | 16619 |
| 온정 | city | Busan | Korea, Republic of (South) | 35.29 | 129.26 | 3 | 22296 |
| 온정리 | city | Gyeongbuk | Korea, Republic of (South) | 36.71 | 129.34 | 830 | 6465 |
| 온정리 | city | Gangwon | Korea, Republic of (South) | 38.19 | 128.59 | 147 | 15532 |
| 온주동 | city | Chungnam | Korea, Republic of (South) | 36.76 | 127.02 | 45 | 65884 |
| 온직리 | city | Chungnam | Korea, Republic of (South) | 36.38 | 126.81 | 830 | 7888 |
| 온천 | city | Chungnam | Korea, Republic of (South) | 36.39 | 127.26 | 830 | 24986 |
| 온천동 | city | Gyeongbuk | Korea, Republic of (South) | 37.08 | 129.29 | 830 | 4727 |
| 온천동 | city | Chungnam | Korea, Republic of (South) | 36.71 | 126.18 | 29 | 5156 |
| 온천동 | city | Chungnam | Korea, Republic of (South) | 36.44 | 126.80 | 830 | 7785 |
| 온천동 | city | Gyeongbuk | Korea, Republic of (South) | 36.72 | 129.34 | 830 | 6705 |
| 온탑리 | city | Chungnam | Korea, Republic of (South) | 36.35 | 126.77 | 830 | 8534 |
| 온팽이 | city | Jeonbuk | Korea, Republic of (South) | 36.01 | 127.77 | 1177 | 4618 |
| 온평 | city | Gyeongbuk | Korea, Republic of (South) | 36.00 | 128.03 | 830 | 4470 |
| 온해리 | city | Chungnam | Korea, Republic of (South) | 36.30 | 126.75 | 239 | 9304 |