| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Yakp'o-dong | city | Jeju | Korea, Republic of (South) | 33.21 | 126.26 | 3 | 5395 |
| Yakpodong | city | Jeju | Korea, Republic of (South) | 33.21 | 126.26 | 3 | 5395 |
| Yakp’o-dong | city | Jeju | Korea, Republic of (South) | 33.21 | 126.26 | 3 | 5395 |
| Yangch'on-dong | city | Jeju | Korea, Republic of (South) | 33.52 | 126.64 | 213 | 41064 |
| Yangch’ŏn-dong | city | Jeju | Korea, Republic of (South) | 33.52 | 126.64 | 213 | 41064 |
| Yangjamdanji | city | Jeju | Korea, Republic of (South) | 33.43 | 126.43 | 1187 | 51737 |
| Yangjeondong | city | Jeju | Korea, Republic of (South) | 33.45 | 126.40 | 830 | 22757 |
| Yangjin-dong | city | Jeju | Korea, Republic of (South) | 33.45 | 126.40 | 830 | 22757 |
| Yangmadanji | city | Jeju | Korea, Republic of (South) | 33.31 | 126.61 | 830 | 17210 |
| Yech'o-ri | city | Jeju | Korea, Republic of (South) | 33.95 | 126.33 | 0 | 598 |
| Yech'o-ri | city | Jeju | Korea, Republic of (South) | 33.95 | 126.33 | 3 | 598 |
| Yech'on-ni | city | Jeju | Korea, Republic of (South) | 33.30 | 126.61 | 830 | 17739 |
| Yech’o-ri | city | Jeju | Korea, Republic of (South) | 33.95 | 126.33 | 0 | 598 |
| Yech’o-ri | city | Jeju | Korea, Republic of (South) | 33.95 | 126.33 | 3 | 598 |
| Yech’ŏn-ni | city | Jeju | Korea, Republic of (South) | 33.30 | 126.61 | 830 | 17739 |
| Yeogwondong | city | Jeju | Korea, Republic of (South) | 33.28 | 126.63 | 226 | 13761 |
| Yeompodong | city | Jeju | Korea, Republic of (South) | 33.25 | 126.62 | 3 | 11425 |
| Yeongjidong | city | Jeju | Korea, Republic of (South) | 33.35 | 126.78 | 269 | 11305 |
| Yeonhwadong | city | Jeju | Korea, Republic of (South) | 33.29 | 126.23 | 219 | 13562 |
| Yeonhwadong | city | Jeju | Korea, Republic of (South) | 33.46 | 126.35 | 236 | 11419 |
| Yerye-dong | city | Jeju | Korea, Republic of (South) | 33.28 | 126.40 | 895 | 24333 |
| Yerye-dong | city | Jeju | Korea, Republic of (South) | 33.25 | 126.39 | 3 | 16408 |
| Yewon-dong | city | Jeju | Korea, Republic of (South) | 33.46 | 126.40 | 830 | 22120 |
| Yewondong | city | Jeju | Korea, Republic of (South) | 33.46 | 126.40 | 830 | 22120 |
| Yogwon-dong | city | Jeju | Korea, Republic of (South) | 33.28 | 126.63 | 226 | 13761 |
| Yomp'o-dong | city | Jeju | Korea, Republic of (South) | 33.25 | 126.62 | 3 | 11425 |
| Yondae-dong | city | Jeju | Korea, Republic of (South) | 33.27 | 126.68 | 0 | 6825 |
| Yondae-gol | city | Jeju | Korea, Republic of (South) | 33.27 | 126.68 | 0 | 6825 |
| Yong-dong | city | Jeju | Korea, Republic of (South) | 33.52 | 126.67 | 219 | 14318 |
| Yonga-dong | city | Jeju | Korea, Republic of (South) | 33.37 | 126.70 | 1053 | 11663 |
| Yongch'on-dong | city | Jeju | Korea, Republic of (South) | 33.29 | 126.57 | 830 | 25588 |
| Yongdamil-dong | city | Jeju | Korea, Republic of (South) | 33.51 | 126.51 | 141 | 72761 |
| Yongdamildong | city | Jeju | Korea, Republic of (South) | 33.51 | 126.51 | 141 | 72761 |
| Yongdu-dong | city | Jeju | Korea, Republic of (South) | 33.56 | 126.75 | 22 | 9239 |
| Yonggang-dong | city | Jeju | Korea, Republic of (South) | 33.47 | 126.58 | 1049 | 128389 |
| Yonggang-ni | city | Jeju | Korea, Republic of (South) | 33.47 | 126.58 | 1049 | 128389 |
| Yonggangdong | city | Jeju | Korea, Republic of (South) | 33.47 | 126.58 | 1049 | 128389 |
| Yonghaedong | city | Jeju | Korea, Republic of (South) | 33.47 | 126.32 | 19 | 7937 |
| Yonghung-ni | city | Jeju | Korea, Republic of (South) | 33.96 | 126.30 | 3 | 533 |
| Yonghŭng-dong | city | Jeju | Korea, Republic of (South) | 33.25 | 126.48 | 134 | 22102 |
| Yonghŭng-dong | city | Jeju | Korea, Republic of (South) | 33.29 | 126.49 | 1236 | 29033 |
| Yonghŭng-ni | city | Jeju | Korea, Republic of (South) | 33.29 | 126.49 | 1236 | 29033 |
| Yongnam-ni | city | Jeju | Korea, Republic of (South) | 33.29 | 126.49 | 1236 | 29033 |
| Yongp'yong-dong | city | Jeju | Korea, Republic of (South) | 33.49 | 126.57 | 830 | 117854 |
| Yongp'yong-ni | city | Jeju | Korea, Republic of (South) | 33.49 | 126.57 | 830 | 117854 |
| Yongsudong | city | Jeju | Korea, Republic of (South) | 33.32 | 126.17 | 6 | 6942 |
| Yongundong | city | Jeju | Korea, Republic of (South) | 33.44 | 126.27 | 68 | 6889 |
| Yonp'yong-ni | city | Jeju | Korea, Republic of (South) | 33.50 | 126.95 | 85 | 1980 |
| Younae | city | Jeju | Korea, Republic of (South) | 33.32 | 126.75 | 137 | 10313 |
| Yusindong | city | Jeju | Korea, Republic of (South) | 33.45 | 126.43 | 830 | 53258 |
| Yusu-dong | city | Jeju | Korea, Republic of (South) | 33.43 | 126.40 | 958 | 25544 |
| Yusuam | city | Jeju | Korea, Republic of (South) | 33.43 | 126.40 | 958 | 25544 |
| Yŏjŏn-dong | city | Jeju | Korea, Republic of (South) | 33.28 | 126.63 | 226 | 13761 |
| Yŏkchi-dong | city | Jeju | Korea, Republic of (South) | 33.35 | 126.78 | 269 | 11305 |
| Yŏmdun | city | Jeju | Korea, Republic of (South) | 33.25 | 126.49 | 180 | 22004 |
| Yŏmp’o-dong | city | Jeju | Korea, Republic of (South) | 33.25 | 126.62 | 3 | 11425 |
| Yŏndae | city | Jeju | Korea, Republic of (South) | 33.49 | 126.42 | 101 | 29628 |
| Yŏngch’ŏn-dong | city | Jeju | Korea, Republic of (South) | 33.29 | 126.57 | 830 | 25588 |
| Yŏngil-dong | city | Jeju | Korea, Republic of (South) | 33.50 | 126.96 | 0 | 863 |
| Yŏngil-tong | city | Jeju | Korea, Republic of (South) | 33.50 | 126.97 | 3 | 863 |
| Yŏngji-dong | city | Jeju | Korea, Republic of (South) | 33.35 | 126.78 | 269 | 11305 |
| Yŏngnam-dong | city | Jeju | Korea, Republic of (South) | 33.29 | 126.49 | 1236 | 29033 |
| Yŏngp’yŏng-dong | city | Jeju | Korea, Republic of (South) | 33.49 | 126.57 | 830 | 117854 |
| Yŏngp’yŏng-ni | city | Jeju | Korea, Republic of (South) | 33.49 | 126.57 | 830 | 117854 |
| Yŏnho-dong | city | Jeju | Korea, Republic of (South) | 33.46 | 126.35 | 236 | 11419 |
| Yŏnhwa-dong | city | Jeju | Korea, Republic of (South) | 33.29 | 126.23 | 219 | 13562 |
| Yŏnmi | city | Jeju | Korea, Republic of (South) | 33.49 | 126.51 | 830 | 106595 |
| Yŏnmi-dong | city | Jeju | Korea, Republic of (South) | 33.49 | 126.51 | 830 | 106595 |
| Yŏnp’yŏng-ni | city | Jeju | Korea, Republic of (South) | 33.50 | 126.95 | 85 | 1980 |