Most common surnames
Material updated 6/30/2025| Rank | Surname | Men | Women | Total |
|---|
| 1. | Korhonen | 11,180 | 10,645 | 21,825 |
| 2. | Virtanen | 11,047 | 10,021 | 21,068 |
| 3. | Mäkinen | 9,925 | 9,615 | 19,540 |
| 4. | Nieminen | 9,918 | 9,420 | 19,338 |
| 5. | Mäkelä | 9,454 | 9,164 | 18,618 |
| 6. | Hämäläinen | 9,120 | 8,657 | 17,777 |
| 7. | Laine | 8,908 | 8,868 | 17,776 |
| 8. | Heikkinen | 8,645 | 8,502 | 17,147 |
| 9. | Koskinen | 8,489 | 8,187 | 16,676 |
| 10. | Järvinen | 7,940 | 7,671 | 15,611 |
