Ružičić families are predominantly Croats and they are mostly from Pleternica , less frequently Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Pleternica and Trogir.
Prevalence
About 160 people with faimily name Ružičić live in Croatia today, in 60 households. There were 120 of them in the middle of the past century, and their number increased by 40 percent. They are located in the most of Croatian counties, in 18 cities and 23 other places, mostly in Zagradje (25), Trogir (20), Malo Korenovo (15), Zagreb (15), and in Gunja in Zupanja area (<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.