In Croatia, Štulac families are almost entirely Croats (from Ozalj ), barely Hungarians (from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Ozalj and in Vinkovci area. In Belošići in Ozalj every third inhabitant had the family name Štulac.
Prevalence
About 40 people with faimily name Štulac live in Croatia today, in 17 households. There were 80 of them in the middle of the past century, and their number halved. They are located in threee Croatian counties, four cities and 6 other places, mostly in Belosici (<10), Karlovac (<10), Cepin in Osijek area (<10), Ozalj (<10), and in Zagreb (<5).
Outside Croatia
At least four families with this surname emigrated from Croatia to the United States. Family name Štulac is present in 6 countries on three continents. The family name "Stulac " is used by some 100 people in the United States , small number in Canada , and small number of people in Mexico.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1923 in source Emigration Commission Zagreb.