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