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Urban population is the population of the territorial units which is designated
as urban areas by the State (wards, town).

Rural population is the population of the territorial units which is designated
as rural areas by the State (communes).

Population density is the average population per square kilometer of the
territory.

Population density is calculated by dividing the population (at time point or
average population) of a certain residential area to the area of that territory.

Population density can be calculated for the entire country or region (rural,
urban, socio-economic region), for each province, district, commune, etc.
in order to reflect the population distribution by geography at a given time.

Formula:

Populationn density = Population
2
(persons/km ) Territory area

Number of households

Household is a social unit, comprising either one person living alone or a
group of people living in the same dwelling and sharing meals together. For
households with 2 persons or over, its members may or may not share a common
budget; or be related by blood or not; or in combination of both.

Sex ratio of the population reflects number of males per 100 females. Sex
ratio of the population is determined by the following formula:

Sex ratio Total of males
of the population = Total of females × 100

Crude birth rate
Crude birth rate indicates that for every 1,000 people, how many live births

are in the reference period.
Formula:

B
CBR (‰) = × 1000
Ptb

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