In Croatia, Carl families are generally Croats (from Opatija area ), rarely Slovenes (from Labin ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Rijeka.
Prevalence
About 10 people with faimily name Carl live in Croatia today, in three households only. There were 20 of them in the middle of the past century, and their number halved. They are located in only four naselja i to in Zagreb (<10), Moscenicka Draga in Opatija area (<5), Labin (<5), and in Potirna on the Island of Korcula (<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.