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