| Name | Ranking | Count |
| Ain | 66th | 15,358 |
| Dain | 86th | 13,456 |
| Jaein | 238th | 6,005 |
| Suin | 281th | 5,139 |
| Hyein | 314th | 4,595 |
| Haein | 316th | 4,587 |
| Seoin | 321th | 4,497 |
| Sein | 342th | 4,187 |
| Taein | 357th | 4,012 |
| Yein | 411th | 3,483 |
| Jiin | 429th | 3,326 |
| Gain | 471th | 2,994 |
| Jein | 496th | 2,776 |
| Jeongin | 512th | 2,663 |
| Yeongin | 972th | 925 |
| Hyoin | 1,010th | 872 |
| Gangin | 1,210th | 631 |
| Chaein | 1,514th | 419 |
| Dongin | 1,619th | 374 |
| Uin | 1,693th | 345 |
| Jongin | 1,759th | 322 |
| Jain | 1,870th | 283 |
| Raein | 2,018th | 247 |
| Yuin | 2,107th | 226 |
| Gyeongin | 2,136th | 220 |
| Gyuin | 2,298th | 192 |
| Nain | 2,534th | 162 |
| Hoin | 2,633th | 149 |
| Seongin | 2,694th | 143 |
| Seungin | 2,831th | 130 |
Data is updated every day based on Family Relations Registration System.
Data after 2021 may differ slightly from actual data.