Achternamen
| Achternaam | Aantal |
|---|---|
| Koop | 6 |
| Koopal | 1 |
| Kooper | 1 |
| Koopman | 37 |
| Koopmann | 1 |
| Koopmans | 37 |
| Koopmanschap | 1 |
| Koops | 12 |
| Kooremans | 1 |
| Koorenhof | 2 |
| Koorman | 2 |
| Koorn | 1 |
| Koort | 1 |
| Koos | 1 |
| Koose | 3 |
| Koot | 22 |
| Koot, van | 1 |
| Kooten, van | 10 |
| Kooter | 5 |
| Kootkar | 1 |
| Kootstra | 1 |
| Kootwijk | 1 |
| Kooy | 3 |
| Kooy, van de | 2 |
| Kooy, van der | 3 |