In Croatia, Kaštropil families are generally Croats (from the Island of Korcule ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Korcula and in Dubrovnik.
Prevalence
About 30 people with faimily name Kaštropil live in Croatia today, in 10 households. There were 20 of them in the middle of the past century, and their number increased by 90 percent. They are located in 7 Croatian counties, in 6 cities and threee other places, mostly in Zadar (15), Blato on the Island of Korcula (10), Ludvinci in Vukovar area (<10), Metkovic (<5), and in Zagreb (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to: France (1), Australia (1), and to the United States (1). Family name Kaštropil (including: Kastropil , Castropil ) is present in 7 countries on four continents.
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.