In Croatia, Koričan families are almost entirely Croats (from Varazdin area ), barely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Varazdin.
Prevalence
About 50 people with faimily name Koričan live in Croatia today, in 20 households. There were 20 of them in the middle of the past century, and their number more than doubled. They are located in 7 Croatian counties, in 8 cities and 6 other places, mostly in Zagreb (25), Varazdin (<10), and in Beretinec (<10), Sveti Ilija (<10) and Bartolovec (<5) in Varazdin area.