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