Crnković families are almost entirely Croats and they are mostly from Delnice area. According to some sources they are from Lika, very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Rijeka. In Veliko Selce in Delnice area every second inhabitant had the family name Crnković.
About 2200 people with faimily name Crnković live in Croatia today, in 980 households. There were 2300 of them in the middle of the past century, and their number remains constant. They are located in almost all Croatian counties, in 84 cities and 218 other places, mostly in Zagreb (460), Rijeka (165), Slavonski Brod (65), Bjelovar (65), and in Karlovac (60).