Šimunac families are Croats and they are mostly from Benkovac area. In the past century, relatively most of Croatian residents bearing this family name were born in Benkovac area and in Western Bosnia (Livno area).
Prevalence
About 280 people with faimily name Šimunac live in Croatia today, in 110 households. There were 100 of them in the middle of the past century, and their number tripled. They are located in the most of Croatian counties, in 20 cities and 22 other places, mostly in Lisane Ostrovicke in Benkovac area (60), Zagreb (60), Split (25), Zadar (20), and in Dobra Voda (20).
Outside Croatia
Family name Šimunac is present in 9 countries on three continents. The family name "Simunac " is used by small number of people in the United States , small number in Canada , and small number of people in Germany.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.