Hajipur is the headquarters of Vaishali district in the Indian state of Bihar. It is famous for producing bananas, and has a modern railway zonal office. Patna, the capital of Bihar is only 10 km from Hajipur. Mahatma Gandhi Setu, one of the longest bridges in the world, links it to Patna. After Patna, it is the fastest developing town in bihar, primarily because of its close proxmity to Patna (just 10 km). There has been plans to expand Patna to 'Greater Patna', by absorbing Hajipur and other surrounding towns in it. In recent years, Hajipur has seen a drastic rise in the middle class and upper middle class income people.
The town is known by the name of Hajipur as it was founded by a King of Bengal named Haji Ilyas Shah who ruled between 1345 to 1358 A.D. Inside the fort built by this king in Hajipur there is a mosque called Jama Masjid, a plain building measuring 84.5 ft (25.8 m) long and 33.5 ft (10.2 m) broad.
In ancient times it was called Ukkacala