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