In Croatia, Rustan families are Croats (from Pregrada ). In the past century, relatively most of Croatian residents bearing this family name were born in Zagreb and Dubrovnik.
Prevalence
About 60 people with faimily name Rustan live in Croatia today, in 20 households. There were 50 of them in the middle of the past century, and their number increased by 10 percent. They are located in four Croatian counties, in 6 cities and 5 other places, mostly in Zagreb (25), Dubrovnik (<10), Ploce (<10), Pregrada (<5), and in Lovorno in Dubrovnik area (<5).
Outside Croatia
Family name Rustan is present in 24 countries worldwide. The family name "Rustan " is used by some 3000 people in Indonesia , about 400 in the United States , and some 300 people in Argentina.
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.