In Croatia, Doc families are Italians by relative majority (from Umag ), less frequently Croats (also from Umag ), and very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Umag and Buje.
Prevalence
About 20 people with faimily name Doc live in Croatia today, in 9 households. They are only located in two Croatian cities and four other places, mostly in Umag (<10), Krizine (<5), Brtonigla in Buje area (<5), Novigrad (<5), and in Babici (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.