Sainthia is a city and a municipality in Suri Sadar subdivision of Birbhum district in the Indian state of West Bengal. The city is known as business city of Birbhum district. The city is under the jurisdiction of Sainthia police station. Sainthia is the fourth most populous city in Birbhum district and 95th most populous city in West Bengal. The city covers an area of 16 km² and had a population of 44,601 in 2011. Located on the banks of Mayurakshi River, Sainthia has been a major settlement. The city is famous for Nandikeshwari Temple, one of the Shakti Peethas in Indian subcontinent.