Marjanica families are Croats and they are mostly from Trogir area. In the past century, relatively most of Croatian residents bearing this family name were born in Banja Luka Region, Bosnia (Banja Luka area) and in Bosanian Posavina (Bosanska Gradiska area).
Prevalence
About 90 people with faimily name Marjanica live in Croatia today, in 30 households. There were 30 of them in the middle of the past century, and their number tripled. They are located in 8 Croatian counties, in 9 cities and 9 other places, mostly in Trogir (20), Zagreb (15), Karlovac (15), Popovic Brdo (10), and in Solin (<10).
Outside Croatia
Family name Marjanica is present in this form only in Croatia.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.