GRONCZEWSKI
There are 86 known people with the surname GRONCZEWSKI with 57 different first names. The surname GRONCZEWSKI is particularly common in New Jersey and Pennsylvania Here you can find the geographic distribution of this nachname in all states:
| 1 | FLORIDA | 12 | FLORIDA | 12 |
| 1 | ILLINOIS | 5 | ILLINOIS | 5 |
| 1 | INDIANA | 12 | INDIANA | 12 |
| 1 | MICHIGAN | 14 | MICHIGAN | 14 |
| 1 | NEW JERSEY | 26 | NEW JERSEY | 26 |
| 1 | NEW YORK | 1 | NEW YORK | 1 |
| 1 | OHIO | 6 | OHIO | 6 |
| 1 | PENNSYLVANIA | 17 | PENNSYLVANIA | 17 |
| 1 | VIRGINIA | 1 | VIRGINIA | 1 |
| 1 | WISCONSIN | 1 | WISCONSIN | 1 |