In Croatia, Tiozzo families are Croats (from Dubrovnik ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik. In Brsečine in Dubrovnik every twentieth inhabitant had the family name Tiozzo.
Prevalence
Only a few people with faimily name Tiozzo live in Croatia today, in two households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in two Croatian cities only, in Split (<10) and Dubrovnik (<5).
Outside Croatia
Family name Tiozzo is present in 17 countries on four continents.