In Croatia, Souček families are predominantly Croats (from Kutina ), rarely Czechs (from Daruvar ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Kutina.
Prevalence
About 20 people with faimily name Souček live in Croatia today, in 8 households. There were 30 of them in the middle of the past century, and their number decreased by 40 percent. They are located in only five naselja i to in Zagreb (<10), Kastel Luksic (<5), Kutina (<5), Daruvar (<5), and in Grabrov Potok in Cazma area (<5).