The population of Iceland is also highly concentrated in one spot on the west of the island. We're talking over 1/3 of the country. If you take in the Greater Reykjavik area, you're talking about 2/3 of the population.

People bring this up when it comes to smaller countries, but it doesn't take into account population concentration, which is much more important than sheer population size or density.

Iceland has been very effective.