West Bengal Blocks consists of panchayats (village councils) and town municipalities. The capital and largest city of the state is Kolkatathe third-largest urban agglomeration and the seventh-largest city in India. Asansol is the second-largest city and 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 cities and towns in West Bengal with 2011 populations over 250,000 are Durgapur, Bardhaman, English Bazar, Baharampur, Habra, Kharagpur, and Shantipur. , West Bengal has the sixth-highest GSDP in India. GSDP at current prices (base 2004–2005) has increased from Rs 2,08,656
Geography of West Bengal at places. West Bengal stands third in the country in terms of mineral production. The state contributes about one-fifth to the total production of minerals in the country. Coal constitutes 99% of the minerals extracted in West Bengal; fireclay, china clay, limestone, copper, iron, wolfram, manganese and dolomite are mined in small quantities. There are good possibilities of obtaining mineral oil and natural gas in the areas near the Bay of Bengal, in Purba Medinipur, Sundarbans, South 24 Parganas and North Bengal plains. Research is ongoing in various places to locate natural gas. West Bengal is the third largest state