Bolf families are Croats and they are mostly from Delnice area. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Delnice.
Prevalence
About 240 people with faimily name Bolf live in Croatia today, in 110 households. There were 260 of them in the middle of the past century, and their number decreased by 10 percent. They are located in the most of Croatian counties, in 19 cities and 16 other places, mostly in Delnice (55), Zagreb (55), Rijeka (30), and in Lokve (30) and Ravna Gora (15) in Delnice area.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.