Margan families are Croats and they are mostly from Rijeka. In the past century, relatively most of Croatian residents bearing this family name were born in Rijeka and Zagreb.
Prevalence
About 180 people with faimily name Margan live in Croatia today, in 80 households. There were 190 of them in the middle of the past century, and their number decreased by 10 percent. They are located in 7 Croatian counties, in 17 cities and 17 other places, mostly in Rijeka (130), Zagreb (10), Split (<10), Sibenik (<10), and in Skrljevo (<10).
Outside Croatia
At least four families with this surname emigrated from Croatia to: Australia (2), the United States (1), and to Canada (1). Family name Margan is present in 36 countries worldwide. The family name "Margan " is used by some 800 people in Romania , about 500 in the United States , and some 200 people in Sudan.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over ten times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.