| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Baegundong | city | Seoul | Korea, Republic of (South) | 37.68 | 127.06 | 288 | 1013262 |
| Baengdi | city | Seoul | Korea, Republic of (South) | 33.48 | 126.45 | 311 | 64033 |
| Bakseokdong | city | Seoul | Korea, Republic of (South) | 37.63 | 126.92 | 219 | 702135 |
| Bamgogae | city | Seoul | Korea, Republic of (South) | 37.46 | 127.11 | 59 | 1335872 |
| Bamnamugol | city | Seoul | Korea, Republic of (South) | 37.65 | 126.96 | 1669 | 547939 |
| Bang-i-dong | city | Seoul | Korea, Republic of (South) | 37.52 | 127.13 | 59 | 1639089 |
| Banggaro | city | Seoul | Korea, Republic of (South) | 37.67 | 127.01 | 830 | 749521 |
| Banghak-dong | city | Seoul | Korea, Republic of (South) | 37.67 | 127.04 | 95 | 1177039 |
| Banghakdong | city | Seoul | Korea, Republic of (South) | 37.67 | 127.02 | 118 | 1014085 |
| Banghakgol | city | Seoul | Korea, Republic of (South) | 37.67 | 127.04 | 95 | 1070880 |
| Bangi-dong | city | Seoul | Korea, Republic of (South) | 37.52 | 127.13 | 59 | 1639089 |
| Bangidong | city | Seoul | Korea, Republic of (South) | 37.52 | 127.13 | 59 | 1639089 |
| Bangjuk 2 Maeul | city | Seoul | Korea, Republic of (South) | 37.47 | 127.11 | 82 | 1390261 |
| Bangjuk I Maeul | city | Seoul | Korea, Republic of (South) | 37.47 | 127.11 | 82 | 1390261 |
| Bangmi | city | Seoul | Korea, Republic of (South) | 37.44 | 126.90 | 830 | 1125087 |
| Bangogae | city | Seoul | Korea, Republic of (South) | 37.46 | 127.11 | 59 | 1335872 |
| Bangsan-dong | city | Seoul | Korea, Republic of (South) | 37.57 | 127.00 | 150 | 1354065 |
| Bangsandong | city | Seoul | Korea, Republic of (South) | 37.57 | 127.00 | 150 | 1354065 |
| Banpo-dong | city | Seoul | Korea, Republic of (South) | 37.50 | 127.01 | 111 | 1208432 |
| Banpodong | city | Seoul | Korea, Republic of (South) | 37.50 | 127.01 | 111 | 1208432 |
| Beon-dong | city | Seoul | Korea, Republic of (South) | 37.63 | 127.04 | 98 | 1749845 |
| Beondaedong | city | Seoul | Korea, Republic of (South) | 33.48 | 126.39 | 183 | 13601 |
| Beondong | city | Seoul | Korea, Republic of (South) | 37.63 | 127.04 | 98 | 1749845 |
| Boku-do | city | Seoul | Korea, Republic of (South) | 37.61 | 127.08 | 134 | 1829843 |
| Bonchon | city | Seoul | Korea, Republic of (South) | 37.45 | 127.05 | 265 | 948411 |
| Bonguidong | city | Seoul | Korea, Republic of (South) | 37.57 | 126.99 | 124 | 1354065 |
| Bongwon-dong | city | Seoul | Korea, Republic of (South) | 37.57 | 126.95 | 413 | 1405522 |
| Bongwondong | city | Seoul | Korea, Republic of (South) | 37.57 | 126.95 | 413 | 1405522 |
| Boyu | city | Seoul | Korea, Republic of (South) | 37.60 | 127.11 | 830 | 1411361 |
| Boyu-ri | city | Seoul | Korea, Republic of (South) | 37.60 | 127.11 | 830 | 1411361 |
| Bukgajwa-dong | city | Seoul | Korea, Republic of (South) | 37.58 | 126.91 | 114 | 1273418 |
| Bukgajwadong | city | Seoul | Korea, Republic of (South) | 37.58 | 126.91 | 114 | 1273418 |
| Bulgwang-dong | city | Seoul | Korea, Republic of (South) | 37.62 | 126.94 | 830 | 836607 |
| Bulgwangdong | city | Seoul | Korea, Republic of (South) | 37.62 | 126.94 | 830 | 836607 |