Kocijan families are Croats and they are mostly from Varazdin. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and Cakovec. In Lun on the Island of Pag every sixth inhabitant had the family name Kocijan.
Prevalence
About 1200 people with faimily name Kocijan live in Croatia today, in 510 households. There were 1100 of them in the middle of the past century, and their number increased by 10 percent. They are located in almost all Croatian counties, in 50 cities and 135 other places, mostly in Varazdin (145), Zagreb (120), Cakovec (65), Nedelisce in Cakovec area (50), and in Sracinec in Varazdin area (40).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1679 in source Catholic Church Parish Records.