Most common surnames
Material updated 3/31/2025| Rank | Surname | Men | Women | Total |
|---|
| 1. | Korhonen | 11,205 | 10,670 | 21,875 |
| 2. | Virtanen | 11,074 | 10,057 | 21,131 |
| 3. | Mäkinen | 9,948 | 9,634 | 19,582 |
| 4. | Nieminen | 9,952 | 9,443 | 19,395 |
| 5. | Mäkelä | 9,469 | 9,172 | 18,641 |
| 6. | Hämäläinen | 9,148 | 8,675 | 17,823 |
| 7. | Laine | 8,932 | 8,876 | 17,808 |
| 8. | Heikkinen | 8,659 | 8,508 | 17,167 |
| 9. | Koskinen | 8,508 | 8,213 | 16,721 |
| 10. | Järvinen | 7,951 | 7,691 | 15,642 |
