In Croatia, Maganja families are generally Croats (from Rijeka area ), very rarely Slovenes. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka area and in Rijeka.
Prevalence
About 20 people with faimily name Maganja live in Croatia today, in 13 households. There were 30 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, two cities and 5 other places, mostly in Podkilavac (10) and Cernik (<5) in Rijeka area, Zagreb (<5), Rovinj (<5), and in Drazice in Rijeka area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1923 in source Emigration Commission Zagreb.