In Croatia, Mrle families are generally Croats (from Delnice ), very rarely Hungarians (from Osijek ). In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Delnice. In Donja Krašićevica in Delnice every second inhabitant had the family name Mrle.
Prevalence
About 40 people with faimily name Mrle live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number decreased by 30 percent. They are located in four Croatian counties, in 7 cities and 10 other places, mostly in Delnice (10), Crni Lug (<10), Zagreb (<5), Rijeka (<5), and in Osijek (<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.