In Croatia, Derokov families are Croats (from Zadar ). In the past century, relatively most of Croatian residents bearing this family name were born in Zadar.
Prevalence
About 10 people with faimily name Derokov live in Croatia today, in four households only. There were 30 of them in the middle of the past century, and their number decreased significantly. They are located in two Croatian cities only, in Olib (<10) and Mali Losinj on the Island of Losinj (<5).
Outside Croatia
At least one family with this surname emigrated from Croatia to the United States. Family name Derokov is present in two countries on two continents. The family name "Derokov " is used by small number of people in the United States.