In Croatia, Mrekaj families are Croats (from Pleternica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica area and in Osijek.
Prevalence
About 10 people with faimily name Mrekaj live in Croatia today, in four households only. There were 10 of them in the middle of the past century, and their number remains constant. They are located in two Croatian counties, two cities and two other places, mostly in Pozega (<10), Osijek (<5), Cepin in Osijek area (<5), and in Djurdjenovac in Nasice area (<5).