Merle families are Croats and they are mostly from Rijeka. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb.
Prevalence
About 110 people with faimily name Merle live in Croatia today, in 50 households. There were 120 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 6 Croatian counties, in 10 cities and 14 other places, mostly in Zagreb (30), Rijeka (30), Delnice (<10), Donja Lomnica (<5), and in Zvekovac in Vrbovec area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1924 in source Emigration Commission Zagreb.