| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Sech'on | city | Chungnam | Korea, Republic of (South) | 36.55 | 126.66 | 170 | 32734 |
| Sech’ŏn | city | Chungnam | Korea, Republic of (South) | 36.55 | 126.66 | 170 | 32734 |
| Sedaebaegi | city | Chungnam | Korea, Republic of (South) | 36.87 | 126.88 | 3 | 7462 |
| Sedari | city | Chungnam | Korea, Republic of (South) | 36.42 | 127.10 | 104 | 35364 |
| Sedong-ni | city | Chungnam | Korea, Republic of (South) | 36.60 | 127.00 | 954 | 11781 |
| Segeori | city | Chungnam | Korea, Republic of (South) | 36.71 | 127.19 | 295 | 44742 |
| Segŏ-ri | city | Chungnam | Korea, Republic of (South) | 36.36 | 126.84 | 157 | 7991 |
| Sehang | city | Chungnam | Korea, Republic of (South) | 36.48 | 126.40 | 3 | 5027 |
| Seikan-ri | city | Chungnam | Korea, Republic of (South) | 36.92 | 127.13 | 59 | 63252 |
| Seiryu | city | Chungnam | Korea, Republic of (South) | 36.53 | 127.25 | 232 | 15687 |
| Seiyo | city | Chungnam | Korea, Republic of (South) | 36.45 | 126.80 | 830 | 7977 |
| Sejilmok | city | Chungnam | Korea, Republic of (South) | 36.67 | 126.30 | 19 | 5861 |
| Sejimmae | city | Chungnam | Korea, Republic of (South) | 36.78 | 126.79 | 3 | 14556 |
| Sekisanri | city | Chungnam | Korea, Republic of (South) | 36.48 | 127.31 | 131 | 13271 |
| Semgol | city | Chungnam | Korea, Republic of (South) | 36.25 | 127.21 | 830 | 17365 |
| Semok | city | Chungnam | Korea, Republic of (South) | 36.48 | 126.40 | 3 | 5027 |
| Senari | city | Chungnam | Korea, Republic of (South) | 36.74 | 127.07 | 229 | 52883 |
| Seobok | city | Chungnam | Korea, Republic of (South) | 36.47 | 127.32 | 170 | 29207 |
| Seobongdong | city | Chungnam | Korea, Republic of (South) | 36.69 | 127.26 | 387 | 35118 |
| Seobonggol | city | Chungnam | Korea, Republic of (South) | 36.72 | 126.98 | 229 | 25979 |
| Seobu | city | Chungnam | Korea, Republic of (South) | 36.68 | 127.20 | 180 | 30019 |
| Seodae | city | Chungnam | Korea, Republic of (South) | 36.45 | 127.33 | 830 | 43219 |
| Seodanggol | city | Chungnam | Korea, Republic of (South) | 36.36 | 127.16 | 206 | 7301 |
| Seodanggol | city | Chungnam | Korea, Republic of (South) | 36.71 | 127.14 | 164 | 47266 |
| Seodanggol | city | Chungnam | Korea, Republic of (South) | 36.67 | 127.24 | 200 | 27963 |
| Seodanggol | city | Chungnam | Korea, Republic of (South) | 36.22 | 127.15 | 72 | 30187 |
| Seodangmal | city | Chungnam | Korea, Republic of (South) | 36.52 | 127.35 | 101 | 44034 |
| Seogeori | city | Chungnam | Korea, Republic of (South) | 36.64 | 126.94 | 830 | 10142 |
| Seogu | city | Chungnam | Korea, Republic of (South) | 36.74 | 127.14 | 62 | 63982 |
| Seokcheon | city | Chungnam | Korea, Republic of (South) | 36.74 | 127.22 | 249 | 57029 |
| Seokgol | city | Chungnam | Korea, Republic of (South) | 36.90 | 126.99 | 164 | 21853 |
| Seokgol | city | Chungnam | Korea, Republic of (South) | 36.62 | 127.28 | 101 | 74418 |
| Seokgye | city | Chungnam | Korea, Republic of (South) | 36.36 | 127.17 | 282 | 7301 |
| Seokgyo | city | Chungnam | Korea, Republic of (South) | 36.49 | 127.32 | 101 | 25096 |
| Seokjang | city | Chungnam | Korea, Republic of (South) | 36.45 | 127.19 | 62 | 34621 |
| Seokjigol | city | Chungnam | Korea, Republic of (South) | 36.65 | 127.09 | 889 | 41243 |
| Seoksam | city | Chungnam | Korea, Republic of (South) | 36.48 | 127.31 | 131 | 13271 |
| Seoksan | city | Chungnam | Korea, Republic of (South) | 36.66 | 127.07 | 830 | 36138 |
| Seolhwari | city | Chungnam | Korea, Republic of (South) | 36.73 | 127.02 | 830 | 35094 |
| Seolmuni | city | Chungnam | Korea, Republic of (South) | 36.28 | 127.17 | 108 | 8030 |
| Seomni | city | Chungnam | Korea, Republic of (South) | 36.95 | 127.12 | 3 | 84754 |
| Seonammuni | city | Chungnam | Korea, Republic of (South) | 36.64 | 127.12 | 275 | 39757 |
| Seonangdang-i | city | Chungnam | Korea, Republic of (South) | 37.00 | 126.54 | 104 | 8683 |
| Seonganmal | city | Chungnam | Korea, Republic of (South) | 36.77 | 127.03 | 32 | 66432 |
| Seongap | city | Chungnam | Korea, Republic of (South) | 36.74 | 127.32 | 141 | 52264 |
| Seongdeok | city | Chungnam | Korea, Republic of (South) | 36.46 | 127.27 | 190 | 7929 |
| Seongdeongni | city | Chungnam | Korea, Republic of (South) | 36.24 | 127.53 | 902 | 25293 |
| Seongdong | city | Chungnam | Korea, Republic of (South) | 36.46 | 127.35 | 236 | 61882 |
| Seonggok | city | Chungnam | Korea, Republic of (South) | 36.66 | 127.21 | 164 | 19907 |
| Seonggol | city | Chungnam | Korea, Republic of (South) | 36.66 | 126.99 | 1020 | 15162 |
| Seonghwan | city | Chungnam | Korea, Republic of (South) | 36.92 | 127.13 | 59 | 63252 |
| Seonghwangdanggogae | city | Chungnam | Korea, Republic of (South) | 36.17 | 127.46 | 1043 | 66194 |
| Seongjeon | city | Chungnam | Korea, Republic of (South) | 36.50 | 127.28 | 45 | 8974 |
| Seongman | city | Chungnam | Korea, Republic of (South) | 36.18 | 127.14 | 36 | 56193 |
| Seongmi | city | Chungnam | Korea, Republic of (South) | 36.76 | 126.97 | 91 | 54440 |
| Seongsan | city | Chungnam | Korea, Republic of (South) | 36.70 | 127.10 | 830 | 41696 |
| Seongsudeul | city | Chungnam | Korea, Republic of (South) | 36.20 | 127.17 | 104 | 29629 |
| Seongyang | city | Chungnam | Korea, Republic of (South) | 36.75 | 127.26 | 229 | 56354 |
| Seonjeol | city | Chungnam | Korea, Republic of (South) | 36.43 | 127.15 | 830 | 47295 |
| Seonmudong | city | Chungnam | Korea, Republic of (South) | 36.21 | 127.39 | 830 | 352367 |
| Seonmunni | city | Chungnam | Korea, Republic of (South) | 36.77 | 127.03 | 22 | 72802 |
| Seonyeokgol | city | Chungnam | Korea, Republic of (South) | 36.75 | 127.24 | 219 | 57744 |
| Seonyeong | city | Chungnam | Korea, Republic of (South) | 36.77 | 127.33 | 295 | 49955 |
| Seopbanmal | city | Chungnam | Korea, Republic of (South) | 36.63 | 127.06 | 374 | 28897 |
| Seorimni | city | Chungnam | Korea, Republic of (South) | 36.19 | 127.21 | 104 | 10521 |
| Seorisil | city | Chungnam | Korea, Republic of (South) | 36.67 | 127.08 | 830 | 39207 |
| Seorumi | city | Chungnam | Korea, Republic of (South) | 36.68 | 126.88 | 298 | 38266 |
| Seosan | city | Chungnam | Korea, Republic of (South) | 36.78 | 126.45 | 62 | 58453 |
| Seosan City | city | Chungnam | Korea, Republic of (South) | 36.78 | 126.45 | 62 | 58453 |
| Seowongol | city | Chungnam | Korea, Republic of (South) | 36.75 | 127.04 | 98 | 50487 |
| Seowonmal | city | Chungnam | Korea, Republic of (South) | 36.17 | 127.19 | 236 | 24045 |
| Seowonmal | city | Chungnam | Korea, Republic of (South) | 36.21 | 127.18 | 114 | 22087 |
| Sep'ai-gol | city | Chungnam | Korea, Republic of (South) | 36.78 | 126.87 | 164 | 36223 |
| Sep’ai-gol | city | Chungnam | Korea, Republic of (South) | 36.78 | 126.87 | 164 | 36223 |
| Seryong-gol | city | Chungnam | Korea, Republic of (South) | 36.71 | 126.51 | 22 | 16489 |
| Seryu-ri | city | Chungnam | Korea, Republic of (South) | 36.84 | 126.78 | 3 | 15388 |
| Set'am-ni | city | Chungnam | Korea, Republic of (South) | 36.28 | 127.02 | 85 | 9130 |
| Setchimmae | city | Chungnam | Korea, Republic of (South) | 36.32 | 127.00 | 239 | 10127 |
| Set’am-ni | city | Chungnam | Korea, Republic of (South) | 36.28 | 127.02 | 85 | 9130 |
| Seungjeokgol | city | Chungnam | Korea, Republic of (South) | 36.17 | 127.23 | 830 | 9012 |
| Seyu-ri | city | Chungnam | Korea, Republic of (South) | 36.84 | 126.78 | 3 | 15388 |