In Croatia, Rain families are Croats (from Koprivnica area ). In the past century, relatively most of Croatian residents bearing this family name were born in Koprivnica area and in Varazdin. In Rovištanci in Koprivnica area every thirtieth inhabitant had the family name Rain.
Prevalence
About 20 people with faimily name Rain live in Croatia today, in 11 households. There were 30 of them in the middle of the past century, and their number decreased by 40 percent. They are located and threee other Croatian places, mostly in Zagreb (<10), Varazdinske Toplice (<5), Varazdin (<5), Novi Marof (<5), and in Rovistanci in Koprivnica area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1917 in source List of Dignitaries, Officials and Public Servants of the Kingdom of Croatia-Slavonia.