Juko families are Croats and they are mostly from middle Bosnia. In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Kakanj area) and in Middle Bosnia (Zenica area).
Prevalence
About 230 people with faimily name Juko live in Croatia today, in 100 households. They are located in the most of Croatian counties, in 25 cities and 27 other places, mostly in Gracac in Knin area (45), Benkovacko Selo (20), Vir in Nin area (15), Zagreb (10), and in Knin (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.