Jarni families are Croats and they are mostly from Cakovec. In the past century, relatively most of Croatian residents bearing this family name were born in Cakovec and in Koprivnica area.
Prevalence
About 100 people with faimily name Jarni live in Croatia today, in 40 households. There were 60 of them in the middle of the past century, and their number increased by 60 percent. They are located in 7 Croatian counties, in 8 cities and 19 other places, mostly in Cakovec (15), Zagreb (10), Kristanovec (<10), Kotoriba in Prelog area (<10), and in Ziskovec (<10).
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.