In Croatia, Kasumaj families are Albanians (from Pula ).
Prevalence
Only a few people with faimily name Kasumaj live in Croatia today, in one household only. They are located in two Croatian cities only, in Zagreb (<5) and Pula (<5).
Outside Croatia
Family name Kasumaj is present in 8 countries on two continents. The family name "Kasumaj " is used by some 100 people in Albania , small number in Switzerland , and small number of people in the United States.