a span of five years. City City population (2008 estimate) [76] Metro population (2008 estimate) [76] Dhaka 7,000,940 12,797,394 Chittagong 2,579,107 3,858,093 Khulna 855,650 1,588,425 Rajshahi 472,775 775,496 Sylhet 463,198 – Barisal 210,374 – Rangpur 241,310 (2001) 251,699 (2001) Geography and climate Main article: Geography of Bangladesh See also: Flooding in