In Croatia, Mrdelja families are Croats (from Nin ). In the past century, relatively most of Croatian residents bearing this family name were born in Nin and Zadar.
Prevalence
About 20 people with faimily name Mrdelja live in Croatia today, in 8 households. There were 20 of them in the middle of the past century, and their number remains constant. They are located in only four naselja i to in Zadar (<10), Vrsi (<10), Ninski Stanovi (<5), and in Nin (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to the United States. Family name Mrdelja is present in three countries on two continents. The family name "Mrdelja " is used by small number of people in the United States.