In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and on Dugi, Long Island.
Prevalence
About 30 people with faimily name Darko live in Croatia today, in households. There were 10 of them in the middle of the past century, and their number tripled. They are located in only two Croatian places: in Osijek (<5) and Zagradci in Duga Resa area (<5).