In Croatia, Mušćo families are Croats (from the Island of Rab ). In the past century, relatively most of Croatian residents bearing this family name were born on the Island of Rab and in Rijeka.
Prevalence
About 30 people with faimily name Mušćo live in Croatia today, in 9 households. There were 20 of them in the middle of the past century, and their number increased by 20 percent. They are only located in in one Croatian city and another small place , mostly in Lopar on the Island of Rab (25) and Novi Vinodolski (<5).