Uglik families are mainly Croats and they are mostly from Osijek area , less frequently Hungarians. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Osijek area.
Prevalence
About 120 people with faimily name Uglik live in Croatia today, in 50 households. There were 90 of them in the middle of the past century, and their number increased by 30 percent. They are only located in in 8 Croatian cities and 18 other places, mostly in Osijek (45), Antunovac in Osijek area (<10), Zagreb (<10), Vukovar (<10), and in Cerna in Zupanja area (<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.