Thanks to this world map that shows the density of people with the surname Noyan in different countries, you can get an idea not only of the popularity of the surname Noyan in each country but also of the different migrations of people surnamed Noyan.
The quantity of people with the surname Noyan that we can find in each country can help us discern the origin of the surname Noyan, as logic tells us that the place with the most people surnamed Noyan will be the country or area of origin of the surname Noyan.