In Croatia, Sinjaković families are generally Croats (from Lipik ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Lipik and Pakrac.
Prevalence
About 50 people with faimily name Sinjaković live in Croatia today, in 20 households. There were 30 of them in the middle of the past century, and their number increased by 30 percent. They are located in 6 Croatian counties, in 7 cities and two other places, mostly in Lipik (25), Kutina (<10), Virovitica (<5), Zagreb (<5), and in Djakovo (<5).