99% waislamu? Umeitoa wapi hii?
angalia hapo kwenye nyekundu chini (Kipengere cha religion)
Source: CIA World Factbook
Population
41,892,895
country comparison to the world:
31 note: estimates for this country explicitly take into account the effects of excess mortality due to AIDS; this can result in lower life expectancy, higher infant mortality, higher death rates, lower population growth rates, and changes in the distribution of population by age and sex than would otherwise be expected (July 2010 est.)
Age structure:

0-14 years: 43% (male 8,853,529/female 8,805,810)
15-64 years: 54.1% (male 10,956,133/female 11,255,868)
65 years and over: 2.9% (male 513,959/female 663,233) (2010 est.)
Median age:

total: 18.3 years
male: 18 years
female: 18.5 years (2010 est.)
Population growth rate:

2.032% (2010 est.)
country comparison to the world:
52 Birth rate:

33.44 births/1,000 population (2010 est.)
country comparison to the world:
40 Death rate:

12.31 deaths/1,000 population (July 2010 est.)
country comparison to the world:
29 Net migration rate:

-0.81 migrant(s)/1,000 population (2010 est.)
country comparison to the world:
152 Urbanization:

urban population: 25% of total population (2008)
rate of urbanization: 4.2% annual rate of change (2005-10 est.)
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: 0.77 male(s)/female
total population: 0.98 male(s)/female (2010 est.)
Infant mortality rate:

total: 68.13 deaths/1,000 live births
country comparison to the world:
22 male: 75 deaths/1,000 live births
female: 61.05 deaths/1,000 live births (2010 est.)
Life expectancy at birth:

total population: 52.49 years
country comparison to the world:
207 male: 50.99 years
female: 54.03 years (2010 est.)
Total fertility rate:

4.31 children born/woman (2010 est.)
country comparison to the world:
40 HIV/AIDS - adult prevalence rate:

6.2% (2007 est.)
country comparison to the world:
12 HIV/AIDS - people living with HIV/AIDS:

1.4 million (2007 est.)
country comparison to the world:
6 HIV/AIDS - deaths:

96,000 (2007 est.)
country comparison to the world:
7 Major infectious diseases:

degree of risk: very high
food or waterborne diseases: bacterial diarrhea, hepatitis A, and typhoid fever
vectorborne diseases: malaria and plague
water contact disease: schistosomiasis
animal contact disease: rabies (2009)
Nationality:

noun: Tanzanian(s)
adjective: Tanzanian
Ethnic groups:

mainland - African 99% (of which 95% are Bantu consisting of more than 130 tribes), other 1% (consisting of Asian, European, and Arab); Zanzibar - Arab, African, mixed Arab and African
Religions:

mainland - Christian 30%, Muslim 35%, indigenous beliefs 35%;
Zanzibar - more than 99% Muslim
Languages:

Kiswahili or Swahili (official), Kiunguja (name for Swahili in Zanzibar), English (official, primary language of commerce, administration, and higher education), Arabic (widely spoken in Zanzibar), many local languages
note: Kiswahili (Swahili) is the mother tongue of the Bantu people living in Zanzibar and nearby coastal Tanzania; although Kiswahili is Bantu in structure and origin, its vocabulary draws on a variety of sources including Arabic and English; it has become the lingua franca of central and eastern Africa; the first language of most people is one of the local languages