In Croatia, Brgan families are Croats (from Ozalj ). In the past century, relatively most of Croatian residents bearing this family name were born in Karlovac and Ozalj.
Prevalence
About 30 people with faimily name Brgan live in Croatia today, in 9 households. There were 40 of them in the middle of the past century, and their number decreased by 40 percent. They are only located in four Croatian cities and 6 other places, mostly in Lovic Prekriski (<10), Karlovac (<10), Veliki Rastovac in Slatina area (<5), Kamanje in Ozalj area (<5), and in Zdenci in Orahovica area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned few times, the first time 1902 in source Hartmann's General List of Apartments in Zagreb.