Bais families are Croats and they are mostly from Ludbreg area. In the past century, relatively most of Croatian residents bearing this family name were born in Varazdin and in Ludbreg area.
Prevalence
About 60 people with faimily name Bais live in Croatia today, in 20 households. There were 60 of them in the middle of the past century, and their number remains constant. They are located in 8 Croatian counties, in 9 cities and 13 other places, mostly in Varazdin (25), Imbriovec Jalzabetski in Ludbreg area (10), Zadar (<10), Martinusevec in Cakovec area (<10), and in Mackovec (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.