Population: 3,984,723 (July 1999 est.)

Age structure:
0-14 years: 43% (male 859,899; female 852,329)
15-64 years: 54% (male 1,061,921; female 1,078,102)
65 years and over: 3% (male 67,969; female 64,503) (1999 est.)

Population growth rate: 3.88% (1999 est.)

Birth rate: 42.56 births/1,000 population (1999 est.)

Death rate: 12.32 deaths/1,000 population (1999 est.)

Net migration rate: 8.53 migrant(s)/1,000 population (1999 est.)
note: it is estimated that approximately 315,000 Eritrean refugees were still living in Sudan by the end of 1997 according to the UNHCR

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: 1.05 male(s)/female
total population: 1 male(s)/female (1999 est.)

Infant mortality rate: 76.84 deaths/1,000 live births (1999 est.)

Life expectancy at birth:
total population: 55.74 years
male: 53.61 years
female: 57.95 years (1999 est.)

Total fertility rate: 5.96 children born/woman (1999 est.)

Nationality:
noun: Eritrean(s)
adjective: Eritrean

Ethnic groups: ethnic Tigrinya 50%, Tigre and Kunama 40%, Afar 4%, Saho (Red Sea coast dwellers) 3%

Religions: Muslim, Coptic Christian, Roman Catholic, Protestant

Languages: Afar, Amharic, Arabic, Tigre and Kunama, Tigrinya, minor ethnic group languages

Literacy: NA