Population: 4,135,933 (July 2000 est.)
Age structure: 0-14 years: 43% (male 888,573; female 883,939) 15-64 years: 54% (male 1,104,082; female 1,122,683) 65 years and over: 3% (male 69,518; female 67,138) (2000 est.)
Population growth rate: 3.86% (2000 est.)
Birth rate: 42.71 births/1,000 population (2000 est.)
Death rate: 12.3 deaths/1,000 population (2000 est.)
Net migration rate: 8.22 migrant(s)/1,000 population (2000 est.) note: according to the UNHCR, about 150,000 Eritrean refugees in Sudan have registered for voluntary repatriation, following the restoration of diplomatic relations between Eritrea and Sudan in January 2000
Sex ratio: at birth: 1.03 male(s)/female under 15 years: 1.01 male(s)/female 15-64 years: 0.98 male(s)/female 65 years and over: 1.04 male(s)/female total population: 0.99 male(s)/female (2000 est.)
Infant mortality rate: 76.66 deaths/1,000 live births (2000 est.)
Life expectancy at birth: total population: 55.79 years male: 53.36 years female: 58.29 years (2000 est.)
Total fertility rate: 5.93 children born/woman (2000 est.)