Čaljkušić 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 Imotski area and in Split.
Prevalence
About 340 people with faimily name Čaljkušić live in Croatia today, in 130 households. They are located in 9 Croatian counties, in 19 cities and 22 other places, mostly in Split (190), in Opanci (45) and Lovrec (15) in Imotski area, Makarska (15), and in Grabovac in Omis area (15).
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.