Bangladesh is largely ethnically homogeneous. Indeed, its name derives from the Bengali ethno-linguistic group, which comprises 98% of the population. Bengalis, who also predominate in the Indian state of West Bengal, are one of the most populous ethnic groups in the world. Variations in Bengali culture and language do exist of course. There are many dialects of Bengali spoken throughout the region. The dialect spoken by those in Chittagong and Sylhet are particularly distinctive. In 2009 the population was estimated at 156 million. About 90% of Bangladeshis are Muslims and the remainder are mostly Hindus.
Bangladesh has the highest population density in the world, excluding a handful of city-states and small countries with populations under 10m, such as Malta and Hong Kong.
Most of the demographic statistics below are from the CIA World Factbook, unless otherwise indicated.
Bangladesh (/ˈbɑːŋɡlədɛʃ/, /ˌbɑːŋɡləˈdɛʃ/, i/ˌbæŋɡləˈdɛʃ/, /ˌbʌŋɡləˈdɛʃ/ ; Bengali: বাংলাদেশ, pronounced: [ˈbaŋlad̪eʃ] ( listen)), officially the People's Republic of Bangladesh (গণপ্রজাতন্ত্রী বাংলাদেশGônoprojatontri Bangladesh), is a country in South Asia. It is located on the fertile Ganges-Brahmaputra delta and forms part of the ancient and historic region of Bengal. The name Bangladesh means "Country of Bengal" in the official Bengali language. To its south lies the Bay of Bengal, while it is bordered by the Republic of India on the north, west and east, and Burma (Myanmar) to the southeast. It is separated from Nepal and Bhutan by India's narrow Siliguri corridor and is situated in geographical proximity to China. With a population of over 160 million people, Bangladesh is the world's eighth most populous country as well as one of the world's most densely populated countries. It is home to the fourth largest population in the Muslim world.