Age structure: 0-14 years: 48% (male 2,303,790; female 2,207,542) 15-64 years: 50% (male 2,272,535; female 2,381,033) 65 years and over: 2% (male 118,333; female 105,626) (July 1997 est.)
Population growth rate: 2.98% (1997 est.)
Birth rate: 53.73 births/1,000 population (1997 est.)
Death rate: 23.98 deaths/1,000 population (1997 est.)
Net migration rate: 0 migrant(s)/1,000 population (1997 est.)
Sex ratio: at birth: 1.03 male(s)/female under 15 years: 1.04 male(s)/female 15-64 years : 0.95 male(s)/female 65 years and over: 1.12 male(s)/female total population: 1 male(s)/female (1997 est.)
Infant mortality rate: 116 deaths/1,000 live births (1997 est.)
Life expectancy at birth: total population: 41.09 years male: 41.44 years female: 40.73 years (1997 est.)
Total fertility rate: 7.37 children born/woman (1997 est.)
Nationality: noun: Nigerien(s) adjective: Nigerien