Mrša families are Croats and they are mostly from Sibenik. In the past century, relatively most of Croatian residents bearing this family name were born in Sibenik and Zagreb.
Prevalence
About 270 people with faimily name Mrša live in Croatia today, in 120 households. There were 220 of them in the middle of the past century, and their number increased by 30 percent. They are located in the most of Croatian counties, in 15 cities and 10 other places, mostly in Zaton (110), Sibenik (40), Zagreb (35), Vodice (20), and in Slavonski Brod (10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.