Uskok families are Croats and they are mostly from Benkovac. In the past century, relatively most of Croatian residents bearing this family name were born in Benkovac and Zagreb.
Prevalence
About 110 people with faimily name Uskok live in Croatia today, in 50 households. There were 50 of them in the middle of the past century, and their number doubled. They are located in 7 Croatian counties, in 10 cities and 8 other places, mostly in Zadar (25), Lisicic (20), Benkovac (15), Zagreb (15), and in Biograd na moru (10).
Outside Croatia
Family name Uskok (including: Uschock , Uschok ) is present in 7 countries on three continents. "Uschock " is used by small number of people in the United States.
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.