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