Thanks to this world map that shows the density of people with the surname Santandreu in different countries, you can get an idea not only of the popularity of the surname Santandreu in each country but also of the different migrations of people surnamed Santandreu.
The quantity of people with the surname Santandreu that we can find in each country can help us discern the origin of the surname Santandreu, as logic tells us that the place with the most people surnamed Santandreu will be the country or area of origin of the surname Santandreu.
Locating at a single glance the countries where the surname Santandreu is more abundant, as well as the areas of the globe where there are hardly any people with the surname Santandreu, is of great utility for individuals interested in surnames, and specifically in the surname Santandreu, as it allows them to quickly and easily visualize the data and its distribution."