In Croatia, Smudj families are Croats (from Sisak area ). In the past century, relatively most of Croatian residents bearing this family name were born in Sisak area and in Zagreb.
Prevalence
Only a few people with faimily name Smudj live in Croatia today, in two households only. There were 20 of them in the middle of the past century, and their number decreased significantly. They are located in only two Croatian places: in Zapresic (<5) and Tisina Erdedska in Sisak area (<5).
Outside Croatia
Family name Smudj is present in four countries on two continents. "Smudy " is used by small number of people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.