Gudac families are Croats and they are mostly from Kraljevica. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Vrbovsko.
Prevalence
About 160 people with faimily name Gudac live in Croatia today, in 70 households. There were 160 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, in 16 cities and 11 other places, mostly in Jablan (30), Kraljevica (25), Rijeka (25), Novska (15), and in Zagreb (10).
Outside Croatia
Family name Gudac (including: Gudaz , Gudach ) is present in 10 countries on four continents. The family name "Gudac " is used by some 100 people in the United States and small number in Romania. "Gudaz " is used by small number of people in the United States and small number in Australia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.