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