In Croatia, Mravljak families are Croats by relative majority (from Zadar ), equally Slovenes (from Slovenia ). In the past century, relatively most of Croatian residents bearing this family name were born in Slovenia.
Prevalence
Only a few people with faimily name Mravljak live in Croatia today, in one household only. There were 10 of them in the middle of the past century, and their number decreased significantly. They are located in one Croatian city only, in Zadar (<5).
Outside Croatia
Family name Mravljak is present in four countries on two continents.