In this world map, you can check at a single glance which countries have more people with the surname Karunarathna. As you can see, it's effortless to notice which countries have a higher number of people carrying the Karunarathna surname.
Thanks to this world map that shows the density of people with the surname Karunarathna in different countries, you can get an idea not only of the popularity of the surname Karunarathna in each country but also of the different migrations of people surnamed Karunarathna.
The quantity of people with the surname Karunarathna that we can find in each country can help us discern the origin of the surname Karunarathna, as logic tells us that the place with the most people surnamed Karunarathna will be the country or area of origin of the surname Karunarathna.