This metric quantifies the number of people per unit area. It is calculated by dividing the total population of a region by its total land area. For example, a country with a population of 10 million and a land area of 100,000 square kilometers would have a value of 100 people per square kilometer.
This measure provides a basic understanding of population distribution. It can be used to compare population concentration across different regions or countries. Historically, this calculation has been a fundamental tool in demographic analysis, allowing for initial assessments of resource demands and potential pressures on the environment. However, it offers a limited perspective, as it does not account for variations in resource availability, distribution of population within the area, or agricultural productivity.