Geography of West Bengal districts north of the Ganges i.e., Cooch Behar, Darjeeling, kalimpong, Jalpaiguri, Alipurduar, North Dinajpur, South Dinajpur and Malda are together termed as North Bengal. The capital and largest city of the state is Kolkata – the third-largest urban agglomeration and the seventh-largest city in India.Asansol is the second largest city & urban agglomeration in West Bengal after Kolkata. Siliguri is an economically important city, strategically located in the northeastern Siliguri Corridor (Chicken's Neck) of India. Other major cities and towns in West Bengal are Howrah, Durgapur, Raniganj, Haldia, Jalpaiguri, Kharagpur, Burdwan, Darjeeling, Midnapore, and Malda. Darjeeling Himalayan hill region is
Economy of West Bengal 33% of the potato yield in 2004, despite accounting for only 7.55% of the population of India. The state's total financial debt stood at . Agriculture accounts for the largest share of the labour force. It contributed around 18.7% to the gross state domestic product (GSDP) in 2009–10. A plurality of the state's population are peasant farmers. Rice and potato are considered to be the principal food crops of West Bengal. West Bengal is the largest producer of rice in India with an annual output of around 16.1 million tonnes in FY 2015-16, and the second-largest producer of potatoes in