| Name | Ranking | Count |
| Seoyun | 🥉 3th | 40,589 |
| Seoyeon | 🏅️ 5th | 37,908 |
| Siu | ⭐ 8th | 34,096 |
| Sua | 29th | 23,341 |
| Seonu | 31th | 22,721 |
| Siyun | 36th | 22,314 |
| Seou | 42th | 21,569 |
| Soyul | 45th | 20,138 |
| Seoa | 51th | 18,705 |
| Soyun | 55th | 18,181 |
| Sieun | 59th | 16,603 |
| Seoyul | 61th | 16,491 |
| Seungu | 70th | 14,640 |
| Seoyeong | 71th | 14,472 |
| Sia | 73th | 14,242 |
| Sion | 84th | 13,666 |
| Suyeon | 85th | 13,538 |
| Siyeon | 92th | 12,733 |
| Seoeun | 101th | 12,051 |
| Siwon | 109th | 11,310 |
| Soeun | 122th | 9,995 |
| Soyeon | 148th | 8,854 |
| Sea | 149th | 8,787 |
| Seunga | 155th | 8,432 |
| Seeun | 171th | 7,836 |
| Siyul | 182th | 7,466 |
| Seowon | 205th | 6,756 |
| Seyeon | 213th | 6,572 |
| Soi | 222th | 6,291 |
| Seungwon | 236th | 6,084 |
Data is updated every day based on Family Relations Registration System.
Data after 2021 may differ slightly from actual data.