Grzunov families are Croats and they are mostly from the Island of Ugljan. In the past century, relatively most of Croatian residents bearing this family name were born in Zadar and Zagreb.
Prevalence
About 170 people with faimily name Grzunov live in Croatia today, in 70 households. There were 110 of them in the middle of the past century, and their number increased by 70 percent. They are located in 8 Croatian counties, in 7 cities and 10 other places, mostly in Zadar (55), Kali on the Island of Ugljan (50), Zagreb (25), Split (<10), and in Kukljica on the Island of Ugljan (<10).
Outside Croatia
Family name Grzunov is present in 7 countries on four continents. The family name "Grzunov " is used by small number of people in the United States and small number in Ecuador.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 2007 in source Encyclopaedia of Croatian Surnames.