The following demographic statistics are from the CIA World Factbook, unless otherwise indicated.

Population
6,017,643 (July 2005 est.)

Age structure
0–14 years: 44.7% (male 1,318,508/female 1,371,164)
15–64 years: 52% (male 1,494,068/female 1,637,276)
65 years and over: 3.3% (male 93,047/female 103,580) (2005 est.)

Population growth rate
2.30% (2006 est.)

Birth rate
42.84 births/1,000 population (2005 est.)

Death rate
20.61 deaths/1,000 population (2005 est.)

Maternal Mortality Ratio
2000 deaths/100 000 births (2000 est.).
Sierra Leone's MMR is the worst of any country in the world, according to the 2000 WHO, UNICEF and UNFPA report.

Infant mortality rate
total: 143.64 deaths/1,000
live births female: 161.06 deaths/1,000
live births male: 125.69 deaths/1,000 live births (2005 est.)
total: 146.86 deaths/1,000

HIV/AIDS
adult prevalence rate: 7% (2001 est.)
people living with HIV/AIDS: 170,000 (2001 est.)
deaths: 11,000 (2001 est.)