Kuštra families are Croats and they are mostly from Imotski area. In the past century, relatively most of Croatian residents bearing this family name were born in Imotsko and in Imotski area.
Prevalence
About 90 people with faimily name Kuštra live in Croatia today, in 30 households. There were 60 of them in the middle of the past century, and their number increased by 40 percent. They are located in 9 Croatian counties, in 11 cities and threee other places, mostly in Runovic in Imotski area (45), Zagreb (20), Split (<10), Borik in Orahovica area (<10), and in Ilok (<5).
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.