In Croatia, Tuljak families are predominantly Croats (from Buje area ), rarely Italians (from Buje ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Slovenia. In Bukori in Buje area every sixth inhabitant had the family name Tuljak.
Prevalence
About 40 people with faimily name Tuljak live in Croatia today, in 20 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in two Croatian counties and 5 other places, mostly in Rijeka (15), Opatija (<10), Rovinj (<5), Novigrad (<5), and in Buzinija (<5).
Outside Croatia
Family name Tuljak (including: Tulyak , Tulliach , Tugliach and Tuliak ) is present in 11 countries on four continents.