The quantity of people with the surname Sangiao that we can find in each country can help us discern the origin of the surname Sangiao, as logic tells us that the place with the most people surnamed Sangiao will be the country or area of origin of the surname Sangiao.
Locating at a single glance the countries where the surname Sangiao is more abundant, as well as the areas of the globe where there are hardly any people with the surname Sangiao, is of great utility for individuals interested in surnames, and specifically in the surname Sangiao, as it allows them to quickly and easily visualize the data and its distribution."