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