Thanks to this world map that shows the density of people with the surname Kolnik in different countries, you can get an idea not only of the popularity of the surname Kolnik in each country but also of the different migrations of people surnamed Kolnik.
Globalization can make the surname Kolnik be found in almost every country around the globe, but being able to see the density of people residing in a country with the surname Kolnik greatly aids all those who seek a deeper knowledge about the surname Kolnik.