 The town was once an important trading center for salt manufactured from saline water obtained from wells of 12 village estates located near the town.This salt was called Sultanpur Salt after the location of the most important salt-works of the region.Sultanpur was the centre of salt production for use in Delhi and the United Provinces until the late 19th century, exporting annually 680,000 maunds or 18,350 tons (1 maund = 37 kg approx.)