Population Density

What this measures

Population density is population divided by land area — people per square kilometer. It captures how crowded a country is on average, though a national average can hide enormous internal variation between packed cities and empty countryside.

Why it matters

Density shapes urban planning, transportation, housing costs, and how governments deliver services. Two countries with identical populations can face completely different challenges if one is concentrated in a small area and the other is spread across a continent.

Notable patterns

• Monaco is the most densely populated country in this dataset, and also one of the smallest by land area — high density here comes from a small footprint, not just a large population.
• Mongolia is the least densely populated, illustrating how differently people can be distributed across similarly sized territories.
• 9 of the 10 most densely populated countries in this dataset rank in the smaller half by land area — density and small territory tend to go together, though not always.

Methodology & sources

Population density is calculated as population ÷ land area (km²). Population is sourced from World Bank SP.POP.TOTL; land area from AG.LND.TOTL.K2. When population and land-area values are from different years, the later year is shown. Countries with zero or missing land area are excluded. Some small territories and disputed regions are excluded where the World Bank does not report a figure for them.