In Croatia, Alfreider families are Croats (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka area and in Rijeka.
Prevalence
Only a few people with faimily name Alfreider live in Croatia today, in three households only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in two Croatian cities only, in Rijeka (<5) and Zagreb (<5).
Outside Croatia
Family name Alfreider is present in four countries on two continents.