| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Yech'o-ri | city | Cheju-do | Korea, Republic of (South) | 33.95 | 126.3333333 | 3 | 1186 |
| Yech'on-ni | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.6333333 | 498 | 32505 |
| Yech'ŏn-ni | city | Cheju-do | Korea, Republic of (South) | 33.3 | 126.6333333 | 498 | 32505 |
| Yerye-dong | city | Cheju-do | Korea, Republic of (South) | 33.2458333 | 126.3908333 | 3 | 15668 |
| Yojon-dong | city | Cheju-do | Korea, Republic of (South) | 33.2833333 | 126.6333333 | 226 | 22843 |
| Yon-dong | city | Cheju-do | Korea, Republic of (South) | 33.4811111 | 126.4944444 | 347 | 25492 |
| Yondae-dong | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.6833333 | 0 | 19398 |
| Yondae-gol | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.6833333 | 0 | 19398 |
| Yondong-ni | city | Cheju-do | Korea, Republic of (South) | 33.4811111 | 126.4944444 | 347 | 25492 |
| Yong-dong | city | Cheju-do | Korea, Republic of (South) | 33.5166667 | 126.6666667 | 219 | 26117 |
| Yonga-dong | city | Cheju-do | Korea, Republic of (South) | 33.3666667 | 126.7 | 1053 | 34224 |
| Yongch'on-dong | city | Cheju-do | Korea, Republic of (South) | 33.2986111 | 126.5988889 | 603 | 33784 |
| Yongdang-ni | city | Cheju-do | Korea, Republic of (South) | 33.3313889 | 126.1819444 | 36 | 20999 |
| Yonggang-dong | city | Cheju-do | Korea, Republic of (South) | 33.4666667 | 126.5833333 | 1049 | 29924 |
| Yonggang-ni | city | Cheju-do | Korea, Republic of (South) | 33.4666667 | 126.5833333 | 1049 | 29924 |
| Yonghung-ni | city | Cheju-do | Korea, Republic of (South) | 33.95 | 126.3 | 0 | 1186 |
| Yongil-tong | city | Cheju-do | Korea, Republic of (South) | 33.5011111 | 126.965 | 3 | 1712 |
| Yongji-dong | city | Cheju-do | Korea, Republic of (South) | 33.35 | 126.7833333 | 269 | 33444 |
| Yongnang-ni | city | Cheju-do | Korea, Republic of (South) | 33.2611111 | 126.2113889 | 45 | 28331 |
| Yongsu-ri | city | Cheju-do | Korea, Republic of (South) | 33.3255556 | 126.1719444 | 6 | 20999 |
| Yonhwa-dong | city | Cheju-do | Korea, Republic of (South) | 33.2997222 | 126.2361111 | 295 | 32371 |
| Yonmi | city | Cheju-do | Korea, Republic of (South) | 33.4872222 | 126.5052778 | 449 | 28191 |
| Yonmi-dong | city | Cheju-do | Korea, Republic of (South) | 33.4872222 | 126.5052778 | 449 | 28191 |
| Yonp'yong-ni | city | Cheju-do | Korea, Republic of (South) | 33.5102778 | 126.9622222 | 68 | 1712 |
| Yusin-dong | city | Cheju-do | Korea, Republic of (South) | 33.45 | 126.4333333 | 859 | 32182 |
| Yusu-dong | city | Cheju-do | Korea, Republic of (South) | 33.4333333 | 126.4 | 958 | 29887 |
| Yusuam | city | Cheju-do | Korea, Republic of (South) | 33.4333333 | 126.4 | 958 | 29887 |
| Yŏjŏn-dong | city | Cheju-do | Korea, Republic of (South) | 33.2833333 | 126.6333333 | 226 | 22843 |
| Yŏn-dong | city | Cheju-do | Korea, Republic of (South) | 33.4811111 | 126.4944444 | 347 | 25492 |
| Yŏndae-dong | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.6833333 | 0 | 19398 |
| Yŏndae-gol | city | Cheju-do | Korea, Republic of (South) | 33.2666667 | 126.6833333 | 0 | 19398 |
| Yŏndong-ni | city | Cheju-do | Korea, Republic of (South) | 33.4811111 | 126.4944444 | 347 | 25492 |
| Yŏngch'ŏn-dong | city | Cheju-do | Korea, Republic of (South) | 33.2986111 | 126.5988889 | 603 | 33784 |
| Yŏnghŭng-ni | city | Cheju-do | Korea, Republic of (South) | 33.95 | 126.3 | 0 | 1186 |
| Yŏngil-tong | city | Cheju-do | Korea, Republic of (South) | 33.5011111 | 126.965 | 3 | 1712 |
| Yŏngji-dong | city | Cheju-do | Korea, Republic of (South) | 33.35 | 126.7833333 | 269 | 33444 |
| Yŏngnang-ni | city | Cheju-do | Korea, Republic of (South) | 33.2611111 | 126.2113889 | 45 | 28331 |
| Yŏnhwa-dong | city | Cheju-do | Korea, Republic of (South) | 33.2997222 | 126.2361111 | 295 | 32371 |
| Yŏnmi | city | Cheju-do | Korea, Republic of (South) | 33.4872222 | 126.5052778 | 449 | 28191 |
| Yŏnmi-dong | city | Cheju-do | Korea, Republic of (South) | 33.4872222 | 126.5052778 | 449 | 28191 |
| Yŏnp'yŏng-ni | city | Cheju-do | Korea, Republic of (South) | 33.5102778 | 126.9622222 | 68 | 1712 |