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