Age structure:
0-14 years:
44% (male 27,181,020; female 26,872,317)
15-64 years:
53% (male 33,495,794; female 32,337,193)
65 years and over:
3% (male 1,729,149; female 1,722,349) (2000 est.)
Population growth rate: 2.67% (2000 est.)
Birth rate: 40.16 births/1,000 population (2000 est.)
Death rate: 13.72 deaths/1,000 population (2000 est.)
Net migration rate: 0.28 migrant(s)/1,000 population (2000 est.)
Sex ratio:
at birth:
1.03 male(s)/female
under 15 years:
1.01 male(s)/female
15-64 years:
1.04 male(s)/female
65 years and over:
1 male(s)/female
total population:
1.02 male(s)/female (2000 est.)
Infant mortality rate: 74.18 deaths/1,000 live births (2000 est.)
Life expectancy at birth:
total population:
51.56 years
male:
51.58 years
female:
51.55 years (2000 est.)
Total fertility rate: 5.66 children born/woman (2000 est.)
Nationality:
noun:
Nigerian(s)
adjective:
Nigerian
Ethnic groups: Nigeria, which is Africa's most populous country, is composed of more than 250 ethnic groups; the following are the most populous and politically influential: Hausa and Fulani 29%, Yoruba 21%, Igbo (Ibo) 18%, Ijaw 10%, Kanuri 4%, Ibibio 3.5%, Tiv 2.5%
Religions: Muslim 50%, Christian 40%, indigenous beliefs 10%
Languages: English (official), Hausa, Yoruba, Igbo (Ibo), Fulani
Literacy:
definition:
age 15 and over can read and write
total population:
57.1%
male:
67.3%
female:
47.3% (1995 est.)