In Croatia, Čalo families are Croats (from Sinj area ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and in Sinj area.
Prevalence
About 70 people with faimily name Čalo live in Croatia today, in 30 households. There were 10 of them in the middle of the past century, and their number multiplied. They are located in threee Croatian counties and four other places, mostly in Osijek (20), Kosute in Sinj area (20), Split (<10), Tenja (<10), and in Trilj in Sinj area (<10).