In Croatia, Buči families are Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
About 40 people with faimily name Buči live in Croatia today, in 16 households. There were 70 of them in the middle of the past century, and their number decreased by 50 percent. They are located in two Croatian counties, two cities and 5 other places, mostly in Sesvete (<10), Glavnica Donja (<10), Belovar (<10), Sveta Helena (<5), and in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1942 in source Phone Directory of the Independent State of Croatia 1942.