Ujlaki families are Croats and they are mostly from Prelog area. In the past century, relatively most of Croatian residents bearing this family name were born in Prelog area and in Cakovec.
Prevalence
About 150 people with faimily name Ujlaki live in Croatia today, in 60 households. There were 120 of them in the middle of the past century, and their number increased by 20 percent. They are located in 6 Croatian counties, in 7 cities and 17 other places, mostly in Kotoriba in Prelog area (50), Zagreb (25), Donja Dubrava in Koprivnica area (15), Koprivnica (<10), and in Prelog (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.