In Croatia, Gulja families are generally Croats (from Buzet area ), very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and in Buzet area.
Prevalence
About 20 people with faimily name Gulja live in Croatia today, in 8 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in two Croatian counties, two cities and 5 other places, mostly in Rijeka (10), Lupoglav in Buzet area (<5), in Jusici (<5) and Veli Brgud (<5) in Opatija area, and in Semic in Buzet area (<5).