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