Khulna is the fourth largest city in Bangladesh. It is on the banks of the Rupsha and Bhairab rivers in Khulna District. It is the headquarters of Khulna Division. It is a major industrial and commercial center. It has a seaport named Mongla on its outskirts, 38 km from Khulna City. There were about 1,000,000 people in 2010 estimation.