In Croatia, Mungjer families are Croats (from Zagreb ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb.
Prevalence
Only a few people with faimily name Mungjer live in Croatia today, in one household only. They are located in one Croatian city only, in Zagreb (<5).
Outside Croatia
Family name Mungjer is present in three countries on two continents. "Mungyer " is used by few people in the United States.