Area 94,163 sq. km
Population 82,878,796
Capital Patna
Principal Languages Hindi
Agriculture
Bihar has a total geographical area of about 93.60 lakh hectare, out of which only 56.03 lakh hectare is the net cultivated area and gross cultivated area being 79.46 lakh hectare. About 33.51 lakh hectare net area and 43.86 lakh hectare gross area receive irrigation from different sources. Principal food crops are paddy, wheat, maize and pulses. Main cash crops are sugarcane, potato, tobacco, oilseeds, onion, chillies, jute and roselle. Bihar has notified forest area of 6,764.14 sq. km, which is 7.1 per cent of its geographical area.
Industries
Major Industries are: Railway Wagon Plants of Bharat Wagon Limited at Muzaffarpur and Mokamah; Oil Refinery of Indian Oil Corporation at Barauni; Fertilizer Manufacturing Plant of HPCL at Barauni and PPCL at Amjhor; Cotton Spinning Mills at Siwan, Pandaul, Bhagalpur, Mokamah and Gaya; 13 sugar mills in private sector and 15 in the public sector located in south and north Bihar with a total crushing capacity of 45,000 TPD. In addition, distilleries at Gopalganj, West Champaran, Bhagalpur and Riga (in Sitamarhi district); Finished Leather Industry in West Champaran, Muzaffarpur and Barauni; Jute Mills at Katihar and Samastipur; Medicine Manufacturing Unit at Hajipur; Food Processing Units as also Vanaspati Manufacturing Units at Aurangabad and Patna; besides Kalyanpur Cement Limited at Banjari, are notable in the industrial map of Bihar.
Irrigation
Bihar has an irrigation potential of 28.63 lakh hectares. It is created through major and medium irrigation schemes and 48.97 lakh hectares through minor irrigation schemes.
Transport
Roads: Up to March 2008, Bihar had 45721.059 km of pucca roads including 3734.38 km of national highways and 3766.029 km of state highways, 7992.65 km of major District Roads, 2828.00 km. of other District Roads and 27400 km. of Rural Roads.
Railways: Bihar has a fairly good railway network. There is a railway bridge at Mokamaha in north Bihar. A few railway routes connecting important places like Muzaffarpur-Samastipur-Barauni-Katihar and Muzaffarpur-Chapra-Siwan have been converted into broad gauge. The main rail junctions are at Patna, Gaya, Muzaffarpur, Katihar and Samastipur, etc.
Aviation: There is an international airport at Patna, besides landing grounds in all major districts of the State.