In Croatia, Kotrla families are generally Croats (from Pozega area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica area and in Pozega.
Prevalence
About 40 people with faimily name Kotrla live in Croatia today, in 14 households. There were 30 of them in the middle of the past century, and their number increased by 10 percent. They are located in four Croatian counties and four other places, mostly in Kaptol in Pozega area (15), Velika Gorica (<10), Golo Brdo in Pozega area (<10), Pozega (<5), and in Zagreb (<5).