In Croatia, Berka families are generally Croats (from Osijek area ), rarely Czechs (from Daruvar area ). In the past century, relatively most of Croatian residents bearing this family name were born in Pakrac and in Daruvar area.
Prevalence
About 20 people with faimily name Berka live in Croatia today, in 8 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in 6 Croatian counties, in 6 cities and another small place , mostly in Split (<10), Bjelovar (<5), Laslovo in Osijek area (<5), Badljevina (<5), and in Rovinj (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1925 in source Emigration Commission Zagreb.