About 20 people with faimily name Bertusi live in Croatia today, in 10 households. There were 20 of them in the middle of the past century, and their number remains constant. They are only located in four Croatian cities and 7 other places, mostly in Krizevci (<5), Carevdar (<5), Desno Trebarjevo in Sisak area (<5), Kamesnica in Varazdinske Toplice area (<5), and in Zagreb (<5).
Outside Croatia
Family name Bertusi is present in 11 countries on four continents.