Gržan families are Croats and they are mostly from Slunj. In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and Slunj. In Velika Plana in Gospic every sixth inhabitant had the family name Gržan.
Prevalence
About 290 people with faimily name Gržan live in Croatia today, in 130 households. There were 330 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 21 cities and 26 other places, mostly in Petrcane (55), Zagreb (50), Zadar (30), Karlovac (30), and in Slunj (15).
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.