In Croatia, Loucki families are mainly Croats (from Zagreb ), less frequently Czechs (from Grubisno Polje ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Grubisno Polje.
Prevalence
About 10 people with faimily name Loucki live in Croatia today, in two households only. They are located in one Croatian city only, in Zagreb (<10).
Outside Croatia
Family name Loucki is present in four countries on two continents. "Loucky " is used by small number of people in the United States.