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