Population density - Wikipedia
https://en.wikipedia.org/wiki/Population_densityPopulation density (in agriculture: standing stock or plant density) is a measurement of population per unit land area. It is mostly applied to humans, but sometimes to other living organisms too. It is a key geographical term. In simple terms, population density refers to the number of people living in an area per square kilometre, or other unit of land area.
Population density - Wikipedia
en.wikipedia.org › wiki › Population_densityTherefore, from this very crude type of calculation, the worldwide human population density is approximately 8,000,000,000 ÷ 510,000,000 = 16/km 2 (41/sq mi). However, if only the Earth's land area of 150,000,000 km 2 (58,000,000 sq mi) is taken into account, then human population density is 53/km 2 (140/sq mi).