In Croatia, Roko families are Croats (from Peljesac Peninsula ). In the past century, relatively most of Croatian residents bearing this family name were born in Dubrovnik and on Peljesac Peninsula.
Prevalence
About 40 people with faimily name Roko live in Croatia today, in 17 households. There were 40 of them in the middle of the past century, and their number remains constant. They are located in 7 Croatian counties, in 7 cities and 7 other places, mostly in Dubrovnik (25), Mokosica (<5), Doli in Dubrovnik area (<5), Zaton Doli on the Peljesac peninsula (<5), and in Zamaslina in Dubrovnik area (<5).
In the sources analysed in the project Acta Croatica so far, the name is mentioned over five times, the first time 1906 in source Yearbook and Directory of Literary Society of St. Jerome 1906.