Mijandrušić families are Croats and they are mostly from Pazin area. In the past century, relatively most of Croatian residents bearing this family name were born in Pula and in Pazin area. In Mandalenčići in Pazin area every sixth inhabitant had the family name Mijandrušić.
Prevalence
About 80 people with faimily name Mijandrušić live in Croatia today, in 30 households. There were 70 of them in the middle of the past century, and their number increased by 10 percent. They are only located in in 6 Croatian cities and 9 other places, mostly in Pazin (20), Pula (15), Mandalencici in Pazin area (15), Liznjan in Pula area (<5), and in Dumovec (<5).
Outside Croatia
At least three families with this surname emigrated from Croatia to: the United States (1), France (1), and to Canada (1). Family name Mijandrušić is present in two countries on two continents.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 2007 in source Encyclopaedia of Croatian Surnames.