In Croatia, Siruček families are mainly Czechs (from Grubisno Polje ), equally Croats (from Petrinja ). In the past century, relatively most of Croatian residents bearing this family name were born in Grubisno Polje and Garesnica.
Prevalence
About 20 people with faimily name Siruček live in Croatia today, in 10 households. There were 50 of them in the middle of the past century, and their number decreased significantly. They are located in only five naselja i to in Daruvar (<10), Zagreb (<5), Donja Rasenica (<5), Petrinja (<5), and in Ivanovo Selo (<5).