In Croatia, Rajs families are Croats (from Nasice ). In the past century, relatively most of Croatian residents bearing this family name were born in Middle Bosnia (Sarajevo area) and in Nasice.
Prevalence
About 30 people with faimily name Rajs live in Croatia today, in 13 households. There were 70 of them in the middle of the past century, and their number decreased significantly. They are located in 7 Croatian counties, in 7 cities and four other places, mostly in Osijek (<10), Nasice (<10), Sotin (<10), Koska in Nasice area (<5), and in Zagreb (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.