Most common surnames
Material updated 4/20/2026| Rank | Surname | Men | Women | Total |
|---|
| 1. | Korhonen | 11,104 | 10,560 | 21,664 |
| 2. | Virtanen | 10,941 | 9,913 | 20,854 |
| 3. | Mäkinen | 9,835 | 9,518 | 19,353 |
| 4. | Nieminen | 9,848 | 9,366 | 19,214 |
| 5. | Mäkelä | 9,429 | 9,109 | 18,538 |
| 6. | Laine | 8,855 | 8,837 | 17,692 |
| 7. | Hämäläinen | 9,064 | 8,612 | 17,676 |
| 8. | Heikkinen | 8,581 | 8,453 | 17,034 |
| 9. | Koskinen | 8,448 | 8,138 | 16,586 |
| 10. | Järvinen | 7,892 | 7,606 | 15,498 |
