In Croatia, Luk families are almost entirely Croats (from Pazin ), barely Italians (from Novigrad ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Pazin.
Prevalence
About 50 people with faimily name Luk live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties, in 7 cities and two other places, mostly in Zagreb (15), Novigrad (15), Pazin (10), Sveta Helena (<5), and in Novalja on the Island of Pag (<5).
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.