Khulna is the main city in Khulna Division in Bangladesh. On the bank of Rupsha (and Bhairav) river, it is known as the industrial city and located in southern part of Bangladesh. A large part of the Sundarbans, a UNESCO world heritage is located in Khulna. It has many Jute mills, the only newsprint mill and hardboard mill of Bangladesh, the only state-owned match factory (Dada match, later Dhaka match), Oxygen company (BOL), Ship yard. Khulna is the 3rd largest city in Bangladesh after Dhaka and Chittagong. It is a quiet, calm city inhabited by 1.5 million people.
As of the 2011 census, the city has a population of 663,342. The encompassing Khulna metro area had an estimated population of 1. 022 million as of 2014. Khulna is an old river port located on the Rupsha and Bhoirob river. It is an important hub of Bangladeshi industry and hosts many national companies. It is served by Port of Mongla, the second largest seaport in the country. It is also one of the two principal naval command centres of the Bangladesh Navy. Navy base BNS Titumir is located in the city. A colonial steamboat service, including the fleet Tern, Osrich and Lepcha, continues to operate on the river route to the city. It is regarded as the gateway to the Sundarbans, the world's largest mangrove forest and home of the Bengal tiger. Khulna is also situated north of the Historic Mosque City of Bagerhat, a UNESCO World Heritage Site. Khulna was part of the ancient kingdoms of Vanga or Samatata.