Most common surnames
Material updated 4/6/2026| Rank | Surname | Men | Women | Total |
|---|
| 1. | Korhonen | 11,109 | 10,564 | 21,673 |
| 2. | Virtanen | 10,945 | 9,914 | 20,859 |
| 3. | Mäkinen | 9,840 | 9,523 | 19,363 |
| 4. | Nieminen | 9,854 | 9,367 | 19,221 |
| 5. | Mäkelä | 9,432 | 9,112 | 18,544 |
| 6. | Laine | 8,859 | 8,838 | 17,697 |
| 7. | Hämäläinen | 9,068 | 8,616 | 17,684 |
| 8. | Heikkinen | 8,583 | 8,458 | 17,041 |
| 9. | Koskinen | 8,448 | 8,139 | 16,587 |
| 10. | Järvinen | 7,891 | 7,606 | 15,497 |
