In Croatia, Adler families are predominantly Croats (from the Island of Murter ), rarely Hungarians (from Beli Manastir ), and very rarely Serbs. In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Beli Manastir.
Prevalence
About 20 people with faimily name Adler live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in four Croatian counties and another small place , mostly in Zagreb (10), Beli Manastir (<10), Zadar (<5), Lovran in Opatija area (<5), and in Osijek (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over twenty times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.