In Croatia, Sonjarić families are almost entirely Croats (from Ivanec area ), very rarely Czechs. In the past century, relatively most of Croatian residents bearing this family name were born in Ivanec area and in Ivanec.
Prevalence
About 30 people with faimily name Sonjarić live in Croatia today, in 12 households. There were 30 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties and 5 other places, mostly in Rasinja in Koprivnica area (<10), Jerovec (<5), Klenovnik in Ivanec area (<5), Bedenec (<5), and in Zagreb (<5).