Most common surnames
Material updated 5/4/2026| Rank | Surname | Men | Women | Total |
|---|
| 1. | Korhonen | 11,105 | 10,560 | 21,665 |
| 2. | Virtanen | 10,936 | 9,908 | 20,844 |
| 3. | Mäkinen | 9,834 | 9,514 | 19,348 |
| 4. | Nieminen | 9,844 | 9,363 | 19,207 |
| 5. | Mäkelä | 9,427 | 9,108 | 18,535 |
| 6. | Laine | 8,855 | 8,833 | 17,688 |
| 7. | Hämäläinen | 9,056 | 8,606 | 17,662 |
| 8. | Heikkinen | 8,577 | 8,458 | 17,035 |
| 9. | Koskinen | 8,446 | 8,139 | 16,585 |
| 10. | Järvinen | 7,887 | 7,605 | 15,492 |
