How is population density calculated?

How is population density calculated?

• A. Population divided by land area
• B. Population times land area
• C. The population divided by land area
• D. Land area divided by population

Answer: (C)

Population density measures how crowded an area is by showing how many people live in each unit of land. The way to get this is to divide the total population by the land area they occupy. In formula terms, density equals population divided by land area. This yields a rate, like people per square kilometer, which is why the calculation uses a division that relates people to space. Multiplying the population by land area would mix units and produce a quantity that doesn’t describe crowding. Dividing land area by population would give area per person, the inverse of density, not density itself. So the correct approach is population divided by land area.

Population density measures how crowded an area is by showing how many people live in each unit of land. The way to get this is to divide the total population by the land area they occupy. In formula terms, density equals population divided by land area. This yields a rate, like people per square kilometer, which is why the calculation uses a division that relates people to space.

Multiplying the population by land area would mix units and produce a quantity that doesn’t describe crowding. Dividing land area by population would give area per person, the inverse of density, not density itself. So the correct approach is population divided by land area.