Most common surnames
Material updated 9/15/2025| Rank | Surname | Men | Women | Total |
|---|
| 1. | Korhonen | 11,156 | 10,629 | 21,785 |
| 2. | Virtanen | 11,015 | 10,003 | 21,018 |
| 3. | Mäkinen | 9,906 | 9,592 | 19,498 |
| 4. | Nieminen | 9,905 | 9,415 | 19,320 |
| 5. | Mäkelä | 9,452 | 9,153 | 18,605 |
| 6. | Laine | 8,900 | 8,862 | 17,762 |
| 7. | Hämäläinen | 9,117 | 8,644 | 17,761 |
| 8. | Heikkinen | 8,617 | 8,483 | 17,100 |
| 9. | Koskinen | 8,480 | 8,178 | 16,658 |
| 10. | Järvinen | 7,931 | 7,661 | 15,592 |
