In Croatia, Velko families are mainly Slovaks (from Ilok ), less frequently Croats (also from Ilok ). In the past century, relatively most of Croatian residents bearing this family name were born in Ilok and in Vinkovci area.
About 40 people with faimily name Velko live in Croatia today, in 15 households. There were 20 of them in the middle of the past century, and their number doubled. They are located in only five naselja i to in Ilok (35), Varazdin (<10), Donji Kraljevec in Prelog area (<5), Komletinci in Vinkovci area (<5), and in Selnica in Zlatar area (<5).