In Croatia, Smerdelj families are Croats (from Karlovac ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Zagreb.
Prevalence
About 10 people with faimily name Smerdelj live in Croatia today, in 8 households. There were 10 of them in the middle of the past century, and their number remains constant. They are located in four Croatian cities only: in Karlovac (<10), Zagreb (<10), Split (<5), and in Osijek (<5).
Outside Croatia
Family name Smerdelj is present in five countries on three continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1923 in source Emigration Commission Zagreb.