In Croatia, Rudenjak families are Croats (from Dubrovnik ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and Rijeka.
Prevalence
About 30 people with faimily name Rudenjak live in Croatia today, in 17 households. There were 40 of them in the middle of the past century, and their number decreased by 20 percent. They are located in two Croatian counties, threee cities and threee other places, mostly in Dubrovnik (15), Opatija (<10), Komolac (<5), Prijevor (<5), and in Rijeka (<5).
Outside Croatia
Family name Rudenjak is present in two countries on two continents. The family name "Rudenjak " is used by small number of people in the United States.