In Croatia, Kocelj families are generally Croats (from Dubrovnik area ), very rarely Czechs (also from Dubrovnik area ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and in Dubrovnik area. In Močići in Dubrovnik area every tenth inhabitant had the family name Kocelj.
Prevalence
About 30 people with faimily name Kocelj live in Croatia today, in 12 households. There were 30 of them in the middle of the past century, and their number remains constant. They are only located in four Croatian cities and 6 other places, mostly in Mocici (<10) and Cavtat (<10) in Dubrovnik area, Zagreb (<5), Vukovar (<5), and in Slatine (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.