In Croatia, Gromilović families are Croats (from Ilok ). In the past century, relatively most of Croatian residents bearing this family name were born in Backa, Vojvodina and in Ilok.
Prevalence
About 10 people with faimily name Gromilović live in Croatia today, in 6 households. They are located in only five naselja i to in Ilok (<10), Pozega (<5), Pavlovac in Grubisno Polje area (<5), Velika Gorica (<5), and in Stari Grad on the Island of Hvar (<5).
Outside Croatia
Family name Gromilović is present in this form only in Croatia.