Mrkšić families are mainly Serbs and they are mostly from Vinkovci area , whereas often Croats (from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Osijek and Zagreb. In Jagrovac in Duga Resa area every sixth inhabitant had the family name Mrkšić.
Prevalence
About 120 people with faimily name Mrkšić live in Croatia today, in 70 households. There were 300 of them in the middle of the past century, and their number decreased significantly. They are located in the most of Croatian counties, in 23 cities and 24 other places, mostly in Zagreb (15), Cepin in Osijek area (<10), Osijek (<10), Orolik in Vinkovci area (<10), and in Vukovar (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.