In Croatia, Merdan families are Croats (from Zadar ). In the past century, relatively most of Croatian residents bearing this family name were born in Zadar.
Prevalence
Only a few people with faimily name Merdan live in Croatia today, in three households only. They are located in only two Croatian places: in Zadar (<5) and Zman on Dugi (Long) Island (<5).
Outside Croatia
Family name Merdan is present in 29 countries worldwide.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.