Population:
10,329,208 (July 2009 est.)

Age structure:
0-14 years: 46.7% (male 2,445,841/female 2,381,319)
15-64 years: 50.4% (male 2,386,428/female 2,816,050)
65 years and over: 2.9% (male 126,351/female 173,219) (2009 est.)

Median age:
total: 16.5 years
male: 15.3 years
female: 17.7 years (2009 est.)

Population growth rate:
2.069% (2009 est.)

Birth rate:
40.86 births/1,000 population (2009 est.)

Death rate:
16.09 deaths/1,000 population (July 2009 est.)

Net migration rate:
-4.08 migrant(s)/1,000 population (2009 est.)

Urbanization:
urban population: 27% of total population (2008)
rate of urbanization: 4.7% annual rate of change (2005-10 est.)

Sex ratio:
at birth: 1.04 male(s)/female
under 15 years: 1.03 male(s)/female
15-64 years: 0.85 male(s)/female
65 years and over: 0.73 male(s)/female
total population: 0.92 male(s)/female (2009 est.)

Infant mortality rate:
total: 98.69 deaths/1,000 live births
male: 104.72 deaths/1,000 live births
female: 92.42 deaths/1,000 live births (2009 est.)

Life expectancy at birth:
total population: 47.7 years
male: 46.67 years
female: 48.77 years (2009 est.)

Total fertility rate:
5.31 children born/woman (2009 est.)

HIV/AIDS - adult prevalence rate:
3.5% (2007 est.)

HIV/AIDS - people living with HIV/AIDS:
200,000 (2007 est.)

HIV/AIDS - deaths:
14,000 (2007 est.)

Major infectious diseases:
degree of risk: very high
food or waterborne diseases: bacterial and protozoal diarrhea, hepatitis A, and typhoid fever
vectorborne disease: malaria
water contact disease: schistosomiasis
respiratory disease: meningococcal meningitis
animal contact disease: rabies (2009)

Nationality:
noun: Chadian(s)
adjective: Chadian

Ethnic groups:
Sara 27.7%, Arab 12.3%, Mayo-Kebbi 11.5%, Kanem-Bornou 9%, Ouaddai 8.7%, Hadjarai 6.7%, Tandjile 6.5%, Gorane 6.3%, Fitri-Batha 4.7%, other 6.4%, unknown 0.3% (1993 census)

Religions:
Muslim 53.1%, Catholic 20.1%, Protestant 14.2%, animist 7.3%, other 0.5%, unknown 1.7%, atheist 3.1% (1993 census)

Languages:
French (official), Arabic (official), Sara (in south), more than 120 different languages and dialects

Literacy:
definition: age 15 and over can read and write French or Arabic
total population: 25.7%
male: 40.8%
female: 12.8% (2000 est.)

School life expectancy (primary to tertiary education):
total: 6 years
male: 7 years
female: 4 years (2005)

Education expenditures:
1.9% of GDP (2005)