Page 74 - Health, Population and Environment Education 9

4.3 Population Density

Population density can be defined as total number of people living in one square kilometer
area.

Mathematically,
Total population
Population density =
Total area
It is calculated by dividing total population living in a place or nation by total area of that
place or a nation. Hence, it depends on total population and total area of a place. The total
population in a place is affected by availability of facilities like heath services, education,
transportation, communication, drinking water, electricity, favourable climate, cultivable
land, industry, security, etc.

Solved Numerical Example: 1

The population of Nepal in 2011 A.D. was 26494504 and the area of Nepal is 1471841
square kilometer. Calculate the population density of Nepal.

Solution:
Given, In 2011 A.D. in Nepal,

Total population = 26494504

Total area = 147181 square kilometer
Population density ?

Now,
Total population
Population density =
Total area
2,64,94,504
=
1,47,181
= 180. 01 per sq. km

∴ The density of population (Population density) of Nepal in 2011 A.D. was 180.01 per
sq. km.
The population density of Nepal as 180. 01 per sq. km indicates that nearly 180 people live
in one square kilometer in Nepal.
There has been gradual increase in population density in Nepal. The following table
indicates population density in Nepal.

74 GREEN Environment Population and Health Education Book-9