Population 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.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 of Africa (2000) This is a list of African countries and dependencies by population density in inhabitants/km 2. Saint Helena, being closest to Africa, has been included. Rank Country or territory Density Area Population (2015 est.) inh./km 2 inh./mi² km 2

This is a list of cities worldwide by population density.The population, population density and land area for the cities listed are based on the entire city proper, the defined boundary or border of a city or the city limits of the city. The population density of the cities listed is based on the average number of people living per square kilometer or per square mile.

A population pyramid (age structure diagram) or "age-sex pyramid" is a graphical illustration of the distribution of a population (typically that of a country or region of the world) by age groups and sex; it typically takes the shape of a pyramid when the population is growing. Males are usually shown on the left and females on the right, and they may be measured in absolute …

The states and territories included in the United States Census Bureau's statistics for the United States (population, ethnicity, religion, and most other categories) include the 50 states and the District of Columbia (Washington, D.C.).Separate statistics are maintained for the five permanently inhabited territories of the United States (Puerto Rico, Guam, the U.S. Virgin …

2020 density by population rank and land area (states, territories, and the District of Columbia) State or territory Population density Population Land area Rank (all) Rank (50 states) per mi 2 per km 2 Rank People Rank mi 2 km 2 District of Columbia: 1 — 11295 4361 50 689,545 56 61 158.0 New Jersey: 2 1 1263 488 11 9,288,994 46 7,354 Rhode ...

This is a list of countries and dependencies ranked by human population density, and measured by the number of human inhabitants per square kilometre or square mile.The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO 3166-1.The list also includes but does not rank unrecognized but de facto independent …

The following is a list of countries in the Middle East sorted by projected population. Table. Rank Country (or dependent territory) 2020 projection % of pop. Average relative annual growth (%) Average absolute annual growth Estimated doubling time (years) Official figure (where available) Date of last figure Source 1 Egypt ...

The number density (symbol: n or ρ N) is an intensive quantity used to describe the degree of concentration of countable objects (particles, molecules, phonons, cells, galaxies, etc.) in physical space: three-dimensional volumetric number density, two-dimensional areal number density, or one-dimensional linear number density. Population density is an example of areal number …

This is a list of countries ordered by physiological density. "Arable land" is defined by the UN's Food and Agriculture Organization, the source of "Arable land (hectares per person)" as land under temporary crops (double-cropped areas are counted once), temporary meadows for mowing or for pasture, land under market or kitchen gardens, and land temporarily fallow.