| Name | Ranking | Count |
| Jiu | π₯ 1st | 46,474 |
| Jiun | 364th | 3,945 |
| Jiung | 494th | 2,802 |
| Jiuk | 868th | 1,141 |
| Jiul | 4,019th | 62 |
| Jiui | 5,431th | 33 |
| Emmajiu | 15,034th | 3 |
| Keulroijiu | 15,034th | 3 |
| Adeljiu | 17,637th | 2 |
| Eideunjiu | 17,637th | 2 |
| Hyeonjiu | 17,637th | 2 |
| Reicheljiu | 17,637th | 2 |
| Gimjiu | 17,637th | 2 |
| Geureiseujiu | 17,637th | 2 |
| Reinajiu | 17,637th | 2 |
| Joeljiu | 17,637th | 2 |
| Olribiajiu | 17,637th | 2 |
| Hongjiu | 22,986th | 1 |
| Rusijiu | 22,986th | 1 |
| Danieljiu | 22,986th | 1 |
| Najiung | 22,986th | 1 |
| Rebekajiu | 22,986th | 1 |
| Marijiu | 22,986th | 1 |
| Makeoseujiun | 22,986th | 1 |
| Maedeolrinjiu | 22,986th | 1 |
| Meibeujiu | 22,986th | 1 |
| Bakjiu | 22,986th | 1 |
| Bibianjiu | 22,986th | 1 |
| Sarajiu | 22,986th | 1 |
| Seojiu | 22,986th | 1 |
Data is updated every day based on Family Relations Registration System.
Data after 2021 may differ slightly from actual data.