Using graphic elements like this world map, to see in which countries or regions of the world the surname Kooij is more common, is of great help.
Thanks to this world map that shows the density of people with the surname Kooij in different countries, you can get an idea not only of the popularity of the surname Kooij in each country but also of the different migrations of people surnamed Kooij.
Locating at a single glance the countries where the surname Kooij is more abundant, as well as the areas of the globe where there are hardly any people with the surname Kooij, is of great utility for individuals interested in surnames, and specifically in the surname Kooij, as it allows them to quickly and easily visualize the data and its distribution."