Frank families are predominantly Croats and they are mostly from Osijek area , rarely Italians and Slovenes. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb.
Prevalence
About 200 people with faimily name Frank live in Croatia today, in 90 households. There were 280 of them in the middle of the past century, and their number decreased by 30 percent. They are located in 10 Croatian counties, in 23 cities and 11 other places, mostly in Zagreb (60), Rijeka (50), Bilje in Osijek area (20), Umag (15), and in Pula (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over eighty times, the first time 1683 in source Catholic Church Parish Records.