Bangladesh is largely ethnically homogeneous. Indeed, its name derives from the Bengali ethno-linguistic group, which comprises 98% of the population. The Chittagong Hill Tracts, Sylhet, Mymensingh and North Bengal divisions are home to diverse indigenous peoples. There are many dialects of Bengali spoken throughout the region. The dialect spoken by those in Chittagong and Sylhet are particularly distinctive.



Age-sex pyramid for Bangladesh, 2005

The 2011 total population was 152,518,015 which ranks Bangladesh 8th in the world.
The baseline for population studies on Bangladesh is the official census which is conducted every 10 years, the last being in 2011.


 Gender ratio:

           At birth: 1.04 male(s)/female
              Under 15 years: 1.01 male(s)/female
              15–64 years: 0.9 male(s)/female
              65 years and over: 0.94 male(s)/female
              Total population: 0.93 male(s)/female (2009 est.)

Population Density:

Based on the CIA World Fact Book 2012 figures for population (161,083,804) and land area (130,168 km2), Bangladesh has the highest population density among large countries, 1,237.51 persons per square kilometer, and 12th overall, when small countries and city-states are included.


Official language: Bengali (also known as Bangla).
Chittagonian, Sylheti and Noakhali (all regarded as languages in their own right).
Tribal languages:
Khasi-Jainta, Bishnupriya Manipuri, Arakanese, Chakma, Garo, Ho, Kokborok and Kurukh.
Other languages:
English (spoken and known widely in upper-class & politics), Arabic ( sometimes spoken and known by many Muslims, due to Islam being the primary religion), Urdu (understood by some, and spoken by Biharis).


According to the 2001 census, the religious profile of the population is: Islam 89.7%, Hinduism 9.2%, Buddhism 0.7%, Christianity 0.3% and others (such as Animists and non-religious) 0.1%.[22] The majority of the Muslims are Sunni consisting of 95% of the Muslim population, and the remaining are Shi'a and other sects.



        Definition: age 15 and over can read and write
          Total population: 43.1
          Male: 53.9%
        Female: 31.8% (2003 est.)


Source: (Wikipedia)