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