In Croatia, John families are almost entirely Croats (from Pozega area ), very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Pula.
Prevalence
About 30 people with faimily name John live in Croatia today, in 18 households. There were 10 of them in the middle of the past century, and their number tripled. They are located in 9 Croatian counties, in 6 cities and 6 other places, mostly in Zagreb (20), Dubrovnik (<10), Vetovo in Orahovica area (<5), Orljavac in Pozega area (<5), and in Pula (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.