In Croatia, Trčka families are Croats (from Pleternica ). In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica and Pozega.
Prevalence
About 20 people with faimily name Trčka live in Croatia today, in five households only. There were 30 of them in the middle of the past century, and their number decreased by 40 percent. They are located in threee Croatian counties and two other places, mostly in Sesvete (<10), Buk (<10), Grabarje in Orahovica area (<5), Svilna (<5), and in Vinkovci (<5).