In Croatia, Batrenjak families are Croats (from Garesnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and in Garesnica area.
Prevalence
About 20 people with faimily name Batrenjak live in Croatia today, in 9 households. There were 50 of them in the middle of the past century, and their number decreased significantly. They are located in four Croatian counties, four cities and 6 other places, mostly in Zagreb (<10), Velika Trnovitica in Garesnica area (<10), Bjelovar (<5), Letovanic in Petrinja area (<5), and in Piljenice in Novska area (<5).
Outside Croatia
Family name Batrenjak is present in this form only in Croatia.