Petolas families are Croats and they are mostly from Zapresic area. In the past century, relatively most of Croatian residents bearing this family name were born in Zapresic area and in Zagreb.
About 70 people with faimily name Petolas live in Croatia today, in 40 households. There were 120 of them in the middle of the past century, and their number decreased by 40 percent. They are located in four Croatian counties, two cities and 7 other places, mostly in Zagreb (40), Jakovlje in Zapresic area (20), Donja Bistra in Oroslavje area (10), Leprovica (<5), and in Jabuceta in Bjelovar area (<5).
Family name Petolas is present in four countries on three continents.