In Croatia, Kličko families are almost entirely Croats (from Bjelovar area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar area and in Slavonski Brod.
Prevalence
About 20 people with faimily name Kličko live in Croatia today, in 11 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only five naselja i to in Zagreb (15), Bjelovar (<10), Patkovac (<5), and in Nova Raca (<5) and Bulinac (<5) in Bjelovar area.