Województwo mazowieckie · 48 różnych nazwisk.
| Lp. | Nazwisko | Liczba osób | |
|---|---|---|---|
| 1 | Kosiński | 34 | |
| 2 | Kulesza | 27 | |
| 3 | Piotrowski | 27 | |
| 4 | Czarkowski | 7 | |
| 5 | Dobrogowski | 7 | |
| 6 | Galimski | 7 | |
| 7 | Kaput | 7 | |
| 8 | Kosk | 7 | |
| 9 | Leszczyński | 7 | |
| 10 | Malewski | 7 | |
| 11 | Mucha | 7 | |
| 12 | Orzepowski | 7 | |
| 13 | Różański | 7 | |
| 14 | Słowatycki | 7 | |
| 15 | Sokołowski | 7 | |
| 16 | Turek | 7 | |
| 17 | Buliński | 5 | |
| 18 | Ochmański | 5 | |
| 19 | Sikora | 5 | |
| 20 | Zieliński | 5 | |
| 21 | Babul | 2 | |
| 22 | Baczyński | 2 | |
| 23 | Bąk | 2 | |
| 24 | Bartosik | 2 | |
| 25 | Bieńkowski | 2 | |
| 26 | Fałkowski | 2 | |
| 27 | Kędzirałow | 2 | |
| 28 | Kłosiewicz | 2 | |
| 29 | Kochman | 2 | |
| 30 | Kochmon | 2 | |
| 31 | Koncewicz | 2 | |
| 32 | Krasiński | 2 | |
| 33 | Łyżwiński-Stasiak | 2 | |
| 34 | Molicki-Chodkowski | 2 | |
| 35 | Mrozowski | 2 | |
| 36 | Musielak | 2 | |
| 37 | Nowacki | 2 | |
| 38 | Patoka | 2 | |
| 39 | Piłko | 2 | |
| 40 | Sobolewski | 2 | |
| 41 | Stróżyk | 2 | |
| 42 | Szoda | 2 | |
| 43 | Taylor | 2 | |
| 44 | Widawski | 2 | |
| 45 | Wilkowski | 2 | |
| 46 | Witczak | 2 | |
| 47 | Witek | 2 | |
| 48 | Wrochna | 2 |
Liczby są szacunkowe - informacje o danych.