Most common surnames
Material updated 5/12/2025| Rank | Surname | Men | Women | Total |
|---|
| 1. | Korhonen | 11,199 | 10,656 | 21,855 |
| 2. | Virtanen | 11,066 | 10,049 | 21,115 |
| 3. | Mäkinen | 9,932 | 9,622 | 19,554 |
| 4. | Nieminen | 9,936 | 9,425 | 19,361 |
| 5. | Mäkelä | 9,456 | 9,159 | 18,615 |
| 6. | Hämäläinen | 9,138 | 8,671 | 17,809 |
| 7. | Laine | 8,920 | 8,875 | 17,795 |
| 8. | Heikkinen | 8,652 | 8,505 | 17,157 |
| 9. | Koskinen | 8,497 | 8,204 | 16,701 |
| 10. | Järvinen | 7,948 | 7,682 | 15,630 |
