Population density refers to the average number of living in a square kilometer of a particular place or land. Government of the all the country of the world keep the population density to know the how many people and citizens live in a particular area or place so that can provide services accordingly. Census Bureau, a official organization of Government keeps the close track of population density in all the area of country.

Population density is influence by geographical factors like land topography, climate, soil, vegetation, etc. similarly, socio-economic factors such as industries, trade, transportation, communication, health, education, security, etc. also greatly affect the population density of a particular place.

Population density is reported and normally compared statistic for places around the world. Population density is the measure of the number per unit area. It is represented as people per square mile (or square kilometer).

Density of population can be computed for any fixed area. The population density of cities, villages, markets, states, countries, entire continents, and even the world can be computed.

We can calculate population density by dividing the total population of a place or country by the total land area of that place or country.

Populate density can be calculated by the following formula:

Population density

Where,

P = population of the place

A = total area of the place

For Nepal in AD,

Let’s try,

Total population of Nepal in census 2001 AD = 23151423

Total area of Nepal = 147181 sq. km

So, then

Population Density in 2001 AD

= 157.29 sq. km in census 2001 AD

Let’s try in census year 2011

Total population of Nepal in census 2011 AD = 26,620,809

Total area of Nepal = 147181 sq. km

So, then

Population Density

= 180.87 sq. km in census 2001 AD

The formula show the fact the the population density of Nepal is increased in census year 2011 comparing to the census year 2001.

We can figure out the population density of any area of the world if we know the total population and toal areal of the particular place or area, by dividing the number of people by the amount of land that they live on.