Brunei’s population is growing at a rate of 1.9% and registered 399,687 people in 2009. The country’s population in 2008 was 392,280 people.
(Source: World Bank, World Bank)

(Source: World Bank, World Bank)
The gender ratio in the country is slightly imbalanced i.e. there are about 106.7 males for every 100 females in the country.
(Source: UN Data)
Population by age group
In 2009, the majority of the population belonged to the working age group of 20 to 54 years and registered 232,500 people. In 2008, the proportion was 227,100.

(Source: depd.gov.bn, page: 1)
Median Age
The median age of Brunei’s population in 2009 was 26.6 years. In 2008, the median age registered at 26.4 years.
(Source: depd.gov.bn, page: 1)
Life expectancy
The average life expectancy at birth in the period of 2005 to 2010 for males and females was recorded at 75 years and 79.7 years respectively.
(Source: UN Data)
Birth rate
In 2008, the birth rate in the country per thousand populations was registered at 16.1. The rate has declined from 17 in 2006 to 16.2 in 2007.
(Source: depd.gov.bn, page: 3)
Mortality rate
The mortality rate of infants (per thousand live births) was registered at 5.5 from 2005 to 2010. The crude death rate in 2008 was recorded at 2.7 deaths (per thousand populations).
(Source: depd.gov.bn, page: 3, UN)
Net Migration
International migrant stock till mid 2010 was recorded at 148,100 people. This was approximately 36.4% of the entire population
(Source: UN Data)
Rural/ Urban population ratio
The average annual rate of change of the urban population during 2005 to 2010 was 2.6%. During the same period, the growth rate of the rural population was 0.4%.
(Source: UN Data)
Human Development Index
The country ranks 37th out of 169 countries on the Human Development index 2010 conducted by the United Nations. The HDI provides a composite measure of three dimensions of human development: living a long and healthy life (measured by life expectancy), being educated (measured by adult literacy and gross enrolment in education) and having a decent standard of living (measured by purchasing power parity, PPP, income).
(Source: UNDP)