Maršanić families are almost entirely Croats and they are mostly from Rijeka area , rarely Italians (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb. In Ratulje in Rijeka area every second inhabitant had the family name Maršanić.
Prevalence
About 370 people with faimily name Maršanić live in Croatia today, in 160 households. There were 310 of them in the middle of the past century, and their number increased by 20 percent. They are located in 10 Croatian counties, in 15 cities and 38 other places, mostly in Zagreb (105), Rijeka (65), and in Podhum (30), Ratulje (15) and Jelenje (10) in Rijeka area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.