In Croatia, Plavčak families are generally Croats (from Krapina ), very rarely Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Slovenia and in Zagreb.
Prevalence
About 20 people with faimily name Plavčak live in Croatia today, in 10 households. There were 10 of them in the middle of the past century, and their number doubled. They are located in four Croatian counties, threee cities and four other places, mostly in Bobovje (<10), Tkalci (<10), Druskovec Humski in Pregrada area (<5), Matulji in Opatija area (<5), and in Zutnica (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.