Prohaska families are frequently Croats and they are mostly from Cazma area , less frequently Czechs (from Bjelovar ). In the past century, relatively most of Croatian residents bearing this family name were born in Bjelovar and Kutina.
Prevalence
About 160 people with faimily name Prohaska live in Croatia today, in 70 households. There were 170 of them in the middle of the past century, and their number decreased by 0 percent. They are located in the most of Croatian counties, in 21 cities and 19 other places, mostly in Kutina (30), Bjelovar (25), Zagreb (20), Dubrovnik (10), and in Osijek (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.