In the past century, relatively most of Croatian residents bearing this family name were born in North Herzegovina (Konjic area).
Prevalence
Only a few people with faimily name Raguza live in Croatia today, in two households only. They are located in one Croatian city only, in Knin (<5).
Outside Croatia
Family name Raguza is present in 8 countries on three continents. The family name "Raguza " is used by some 200 people in Brazil , about 50 in Argentina , and small number of people in the United States.