Baljkas families are Croats and they are mostly from Sibenik. According to some sources they are from the Island of Hvar. In the past century, relatively most of Croatian residents bearing this family name were born in Sibenik and Zagreb.
Prevalence
About 180 people with faimily name Baljkas live in Croatia today, in 90 households. There were 210 of them in the middle of the past century, and their number decreased by 20 percent. They are located in 6 Croatian counties, in 6 cities and 6 other places, mostly in Sibenik (145), Zagreb (35), Split (<10), Djurdjevac (<5), and in Dubrava kod Sibenika (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1931 in source Emigration Commission Zagreb.