Ljubenko families are Croats and they are mostly from Dubrovnik area. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Karlovac. In Trnovac in Bosanian Posavina every third inhabitant had the family name Ljubenko.
Prevalence
About 70 people with faimily name Ljubenko live in Croatia today, in 30 households. There were 100 of them in the middle of the past century, and their number decreased by 20 percent. They are located in four Croatian counties, four cities and 5 other places, mostly in Karlovac (20), Zagreb (20), Dubrovnik (10), and in Djurinici (10) and Molunat (<10) in Dubrovnik area.
Outside Croatia
Family name Ljubenko (including: Lyubenko , Liubenco and Liubenko ) is present in 20 countries on three continents. The family name "Ljubenko " is used by small number of people in Ukraine and small number in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.