GROONIS
There are 9 known people with the surname GROONIS with 7 different first names. The surname GROONIS is particularly common in Washington and Arizona Here you can find the geographic distribution of this nachname in all states:
| 1 | ARIZONA | 3 | ARIZONA | 3 |
| 1 | OHIO | 1 | OHIO | 1 |
| 1 | WASHINGTON | 5 | WASHINGTON | 5 |