Age structure: 0-14 years: 45% (male 1,084,736; female 1,119,802) 15-64 years: 52% (male 1,216,111; female 1,320,847) 65 years and over: 3% (male 76,371; female 73,679) (July 1997 est.)
Population growth rate: 3.54% (1997 est.)
Birth rate: 46.67 births/1,000 population (1997 est.)
Death rate: 17.75 deaths/1,000 population (1997 est.)
Net migration rate: 6.5 migrant(s)/1,000 population (1997 est.)
Sex ratio: at birth: 1.03 male(s)/female under 15 years: 0.97 male(s)/female 15-64 years: 0.92 male(s)/female 65 years and over: 1.04 male(s)/female total population : 0.94 male(s)/female (1997 est.)
Infant mortality rate: 132.5 deaths/1,000 live births (1997 est.)
Life expectancy at birth: total population: 48.02 years male: 45.06 years female: 51.07 years (1997 est.)
Total fertility rate: 6.29 children born/woman (1997 est.)
Nationality: noun: Sierra Leonean(s) adjective: Sierra Leonean