In Croatia, Mrkonić families are predominantly Croats (from Nova Gradiska area ), rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Nova Gradiska area and in Zupanja area.
Prevalence
About 60 people with faimily name Mrkonić live in Croatia today, in 19 households. There were 90 of them in the middle of the past century, and their number decreased by 40 percent. They are located in 7 Croatian counties and 6 other places, mostly in Gunja in Zupanja area (15), Bacin Dol in Nova Gradiska area (15), Ernestinovo in Osijek area (10), Soljani in Zupanja area (<10), and in Pula (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.