In Croatia, Čoić families are Croats (from Grubisno Polje ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and Bjelovar.
Prevalence
About 20 people with faimily name Čoić live in Croatia today, in 8 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Dubrovnik (<10), Grubisno Polje (<10), Bjelovar (<5), and in Mlini in Dubrovnik area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1749 in source 18th Century Census.