Thanks to this world map that shows the density of people with the surname Ouro in different countries, you can get an idea not only of the popularity of the surname Ouro in each country but also of the different migrations of people surnamed Ouro.
The quantity of people with the surname Ouro that we can find in each country can help us discern the origin of the surname Ouro, as logic tells us that the place with the most people surnamed Ouro will be the country or area of origin of the surname Ouro.
Globalization can make the surname Ouro be found in almost every country around the globe, but being able to see the density of people residing in a country with the surname Ouro greatly aids all those who seek a deeper knowledge about the surname Ouro.