What is the measurement of population per unit area

Population density (in agriculture: standing stock and standing crop) is a measurement of population per unit area or unit volume; it is a quantity of type number density. It is frequently applied to living organisms, and most of the time to humans. It is a key geographical term.

is the population density, defined as the number of people per square kilometer.

Explanation:

Population density is the measure of how the population of a given country is distributed, which is defined as the equivalent to the number of inhabitants divided by the area. Population density measures the number of people per area, and is generally expressed in inhabitants per square kilometer.