Thanks to this world map that shows the density of people with the surname Culligan in different countries, you can get an idea not only of the popularity of the surname Culligan in each country but also of the different migrations of people surnamed Culligan.
The quantity of people with the surname Culligan that we can find in each country can help us discern the origin of the surname Culligan, as logic tells us that the place with the most people surnamed Culligan will be the country or area of origin of the surname Culligan.
Locating at a single glance the countries where the surname Culligan is more abundant, as well as the areas of the globe where there are hardly any people with the surname Culligan, is of great utility for individuals interested in surnames, and specifically in the surname Culligan, as it allows them to quickly and easily visualize the data and its distribution."