Sitaš families are Croats and they are mostly from Nasice area. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Nasice area.
Prevalence
About 70 people with faimily name Sitaš live in Croatia today, in 30 households. There were 80 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 8 Croatian counties, in 11 cities and 9 other places, mostly in Osijek (15), Barbat na Rabu on the Island of Rab (<10), Koska in Nasice area (<10), Zagreb (<10), and in Visnjevac (<10).
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.