In Croatia, Valenko families are Croats (from Ludbreg area ). In the past century, relatively most of Croatian residents bearing this family name were born in Ludbreg area and in Ludbreg.
Prevalence
About 20 people with faimily name Valenko live in Croatia today, in 7 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Ludbreg (10), Karlovec Ludbreski in Ludbreg area (<10), Split (<5), and in Luka Ludbreska in Ludbreg area (<5).