Lauc families are Croats and they are mostly from Herzegovina. In the past century, relatively most of Croatian residents bearing this family name were born in Herzegovina (Ljubuski area) and in Osijek. In Vašarovići in Herzegovina every sixth inhabitant had the family name Lauc.
Prevalence
About 90 people with faimily name Lauc live in Croatia today, in 40 households. There were 0 of them in the middle of the past century, and their number multiplied. They are located in 8 Croatian counties, in 15 cities and four other places, mostly in Zagreb (30), Osijek (15), Vrgorac (10), Slavonski Brod (10), and in Velika Gorica (<10).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1926 in source Emigration Commission Zagreb.