In Croatia, Mader families are Croats (from Rijeka ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Rijeka.
Prevalence
Only a few people with faimily name Mader live in Croatia today, in four households only. There were 20 of them in the middle of the past century, and their number halved. They are only located in two Croatian cities and four other places, mostly in Zagreb (<5), Lovranska Draga in Opatija area (<5), Ivankovo in Vinkovci area (<5), and in Hvar (<5) and Jelsa (<5) on the Island of Hvar.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1929 in source Emigration Commission Zagreb.