| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
| Ch'angch'ol-li | city | Cheju-do | Korea, Republic of (South) | 33.2652778 | 126.3716667 | 492 | 29042 |
| Ch'angch'on-ni | city | Cheju-do | Korea, Republic of (South) | 33.2652778 | 126.3716667 | 492 | 29042 |
| Ch'angch'ŏl-li | city | Cheju-do | Korea, Republic of (South) | 33.2652778 | 126.3716667 | 492 | 29042 |
| Ch'angch'ŏn-ni | city | Cheju-do | Korea, Republic of (South) | 33.2652778 | 126.3716667 | 492 | 29042 |
| Ch'onaorum-dong | city | Cheju-do | Korea, Republic of (South) | 33.4 | 126.3 | 541 | 31585 |
| Ch'onjil-li | city | Cheju-do | Korea, Republic of (South) | 33.4952778 | 126.9508333 | 3 | 10735 |
| Ch'onjin-dong | city | Cheju-do | Korea, Republic of (South) | 33.4952778 | 126.9508333 | 3 | 10735 |
| Ch'onmi-dong | city | Cheju-do | Korea, Republic of (South) | 33.25 | 126.2333333 | 65 | 17385 |
| Ch'onso-dong | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.4 | 1217 | 34241 |
| Ch'onsong-dong | city | Cheju-do | Korea, Republic of (South) | 33.4833333 | 126.7 | 774 | 34145 |
| Ch'ulp'yong-dong | city | Cheju-do | Korea, Republic of (South) | 33.2333333 | 126.3833333 | 0 | 15668 |
| Ch'ulp'yŏng-dong | city | Cheju-do | Korea, Republic of (South) | 33.2333333 | 126.3833333 | 0 | 15668 |
| Ch'ŏnaorŭm-dong | city | Cheju-do | Korea, Republic of (South) | 33.4 | 126.3 | 541 | 31585 |
| Ch'ŏnjil-li | city | Cheju-do | Korea, Republic of (South) | 33.4952778 | 126.9508333 | 3 | 10735 |
| Ch'ŏnjin-dong | city | Cheju-do | Korea, Republic of (South) | 33.4952778 | 126.9508333 | 3 | 10735 |
| Ch'ŏnmi-dong | city | Cheju-do | Korea, Republic of (South) | 33.25 | 126.2333333 | 65 | 17385 |
| Ch'ŏnsŏ-dong | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.4 | 1217 | 34241 |
| Ch'ŏnsŏng-dong | city | Cheju-do | Korea, Republic of (South) | 33.4833333 | 126.7 | 774 | 34145 |
| Chaesangae | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.7166667 | 0 | 15515 |
| Chaesanp'o | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.7166667 | 0 | 15515 |
| Changjakchi | city | Cheju-do | Korea, Republic of (South) | 33.9411111 | 126.32 | 52 | 1186 |
| Changjon-ni | city | Cheju-do | Korea, Republic of (South) | 33.45 | 126.3833333 | 495 | 29887 |
| Changjŏn-ni | city | Cheju-do | Korea, Republic of (South) | 33.45 | 126.3833333 | 495 | 29887 |
| Cheji-ri | city | Cheju-do | Korea, Republic of (South) | 33.3361111 | 126.2591667 | 403 | 32038 |
| Cheju | city | Cheju-do | Korea, Republic of (South) | 33.5097222 | 126.5219444 | 150 | 15401 |
| Chesangae | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.7166667 | 0 | 15515 |
| Chesanp'o | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.7166667 | 0 | 15515 |
| Chigohul | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.25 | 262 | 34216 |
| Chigŏhŭl | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.25 | 262 | 34216 |
| Chiksa-dong | city | Cheju-do | Korea, Republic of (South) | 33.2833333 | 126.6166667 | 328 | 26162 |
| Chin-dong | city | Cheju-do | Korea, Republic of (South) | 33.3333333 | 126.2333333 | 249 | 32371 |
| Chinjikchi | city | Cheju-do | Korea, Republic of (South) | 33.9411111 | 126.32 | 52 | 1186 |
| Chinp'yong-dong | city | Cheju-do | Korea, Republic of (South) | 33.4 | 126.7333333 | 954 | 34207 |
| Chinp'yŏng-dong | city | Cheju-do | Korea, Republic of (South) | 33.4 | 126.7333333 | 954 | 34207 |
| Choch'on | city | Cheju-do | Korea, Republic of (South) | 33.5363889 | 126.6386111 | 62 | 24208 |
| Choch'on-ni | city | Cheju-do | Korea, Republic of (South) | 33.5363889 | 126.6386111 | 62 | 24208 |
| Choch'ŏn | city | Cheju-do | Korea, Republic of (South) | 33.5363889 | 126.6386111 | 62 | 24208 |
| Choch'ŏn-ni | city | Cheju-do | Korea, Republic of (South) | 33.5363889 | 126.6386111 | 62 | 24208 |
| Chogunsi-ri | city | Cheju-do | Korea, Republic of (South) | 33.4166667 | 126.2833333 | 137 | 13661 |
| Choji-ri | city | Cheju-do | Korea, Republic of (South) | 33.3361111 | 126.2591667 | 403 | 32038 |
| Chomok-tong | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.2 | 98 | 20999 |
| Chongdal-li | city | Cheju-do | Korea, Republic of (South) | 33.4922222 | 126.8972222 | 3 | 21444 |
| Chongdal-li | city | Cheju-do | Korea, Republic of (South) | 33.4833333 | 126.9 | 0 | 21444 |
| Chongnamjon | city | Cheju-do | Korea, Republic of (South) | 33.4666667 | 126.6833333 | 1108 | 34145 |
| Chongnamjŏn | city | Cheju-do | Korea, Republic of (South) | 33.4666667 | 126.6833333 | 1108 | 34145 |
| Chongp'yong-dong | city | Cheju-do | Korea, Republic of (South) | 33.5 | 126.5 | 196 | 28191 |
| Chongsil | city | Cheju-do | Korea, Republic of (South) | 33.4688889 | 126.5097222 | 652 | 28191 |
| Chongsil-dong | city | Cheju-do | Korea, Republic of (South) | 33.4688889 | 126.5097222 | 652 | 28191 |
| Chongsil-tong | city | Cheju-do | Korea, Republic of (South) | 33.4688889 | 126.5097222 | 652 | 28191 |
| Chonhul | city | Cheju-do | Korea, Republic of (South) | 33.5194444 | 126.9519444 | 42 | 5703 |
| Chonp'o-dong | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.65 | 0 | 22843 |
| Chosu-ri | city | Cheju-do | Korea, Republic of (South) | 33.3366667 | 126.2291667 | 249 | 25369 |
| Choten-ri | city | Cheju-do | Korea, Republic of (South) | 33.5363889 | 126.6386111 | 62 | 24208 |
| Chu-sung | city | Cheju-do | Korea, Republic of (South) | 33.5097222 | 126.5219444 | 150 | 15401 |
| Chubun-ri | city | Cheju-do | Korea, Republic of (South) | 33.2519444 | 126.4255556 | 164 | 28630 |
| Chung-dong | city | Cheju-do | Korea, Republic of (South) | 33.4666667 | 126.7833333 | 725 | 34169 |
| Chung-dong | city | Cheju-do | Korea, Republic of (South) | 33.4833333 | 126.9 | 0 | 21444 |
| Chungdal-li | city | Cheju-do | Korea, Republic of (South) | 33.4922222 | 126.8972222 | 3 | 21444 |
| Chungmun-dong | city | Cheju-do | Korea, Republic of (South) | 33.2519444 | 126.4255556 | 164 | 28630 |
| Chungmun-ni | city | Cheju-do | Korea, Republic of (South) | 33.2519444 | 126.4255556 | 164 | 28630 |
| Chuo-dong | city | Cheju-do | Korea, Republic of (South) | 33.3688889 | 126.8652778 | 3 | 20912 |
| Chuŏ-dong | city | Cheju-do | Korea, Republic of (South) | 33.3688889 | 126.8652778 | 3 | 20912 |
| Chwagi-dong | city | Cheju-do | Korea, Republic of (South) | 33.2727778 | 126.2338889 | 121 | 28331 |
| Chyei Chyu | city | Cheju-do | Korea, Republic of (South) | 33.5097222 | 126.5219444 | 150 | 15401 |
| Chōten-ri | city | Cheju-do | Korea, Republic of (South) | 33.5363889 | 126.6386111 | 62 | 24208 |
| Chŏji-ri | city | Cheju-do | Korea, Republic of (South) | 33.3361111 | 126.2591667 | 403 | 32038 |
| Chŏmok-tong | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.2 | 98 | 20999 |
| Chŏngp'yŏng-dong | city | Cheju-do | Korea, Republic of (South) | 33.5 | 126.5 | 196 | 28191 |
| Chŏngsil | city | Cheju-do | Korea, Republic of (South) | 33.4688889 | 126.5097222 | 652 | 28191 |
| Chŏngsil-dong | city | Cheju-do | Korea, Republic of (South) | 33.4688889 | 126.5097222 | 652 | 28191 |
| Chŏngsil-tong | city | Cheju-do | Korea, Republic of (South) | 33.4688889 | 126.5097222 | 652 | 28191 |
| Chŏnhŭl | city | Cheju-do | Korea, Republic of (South) | 33.5194444 | 126.9519444 | 42 | 5703 |
| Chŏnp'o-dong | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.65 | 0 | 22843 |
| Chūbun-ri | city | Cheju-do | Korea, Republic of (South) | 33.2519444 | 126.4255556 | 164 | 28630 |