In Croatia, Lux families are Croats (from Sibenik ).
Prevalence
Only a few people with faimily name Lux live in Croatia today, in three households only. There were 0 of them in the middle of the past century, and their number multiplied. They are located in only four naselja i to in Zagreb (<5), Sveti Ivan Zelina (<5), Stubicke Toplice in Oroslavje area (<5), and in Zaboric (<5).
Outside Croatia
Family name Lux is present in 95 countries worldwide. The family name "Lux " is used by some 10000 people in Germany , about 7000 in the United States , and some 5000 people in Guatemala. "Luex " is used by few people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.