Thanks to this world map that shows the density of people with the surname Ruz in different countries, you can get an idea not only of the popularity of the surname Ruz in each country but also of the different migrations of people surnamed Ruz.
The quantity of people with the surname Ruz that we can find in each country can help us discern the origin of the surname Ruz, as logic tells us that the place with the most people surnamed Ruz will be the country or area of origin of the surname Ruz.