Vlahov families are Croats and they are mostly from Vodice. According to some sources they are from Prvic Sepurina. In the past century, relatively most of Croatian residents bearing this family name were born in Sibenik and Vodice. In Prvić Šepurine in Vodice every sixth inhabitant had the family name Vlahov.
Prevalence
About 370 people with faimily name Vlahov live in Croatia today, in 180 households. There were 330 of them in the middle of the past century, and their number increased by 10 percent. They are located in the most of Croatian counties, in 23 cities and 23 other places, mostly in Sibenik (90), Zagreb (65), Rijeka (35), Vodice (30), and in Prvic Sepurine (25).
Outside Croatia
Family name Vlahov (including: Vlachkov , Vlachov ) is present in 18 countries worldwide. The family name "Vlahov " is used by some 800 people in Bulgaria , about 100 in Australia , and some 100 people in the United States.
In the sources analysed in the project Acta Croatica so far, the name is mentioned over thirty times, the first time 1672 in source Catholic Church Parish Records.