Berta families are Croats and they are mostly from Djurdjevac area. In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica and in Djurdjevac area.
Prevalence
About 120 people with faimily name Berta live in Croatia today, in 60 households. There were 260 of them in the middle of the past century, and their number halved. They are located in the most of Croatian counties, in 19 cities and 16 other places, mostly in Zagreb (25), Koprivnica (10), Pozega (<10), Bjelovar (<10), and in Rijeka (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.