Piro (historically spelled as Peeroo) is a nagar parishad town and corresponding community development block in Bhojpur District, in the Indian state of Bihar. Piro is 39 km from the Ara Railway Station. Jitaura is 6 km from Piro.
Piro is located at . It has an average elevation of 72 metres (236 feet).
India census, Piro had a population of 25,638. Males constitute 53% of the population and females 47%. Piro has an average literacy rate of 56%, lower than the national average of 59.5%: male literacy is 65%, and female literacy is 45%.
In Piro, 18% of the population is under 6 years of age.
the population of the town of Piro was 45,000 in 7,033 households.
The Piro sub-division (Tehsil) is headed by an IAS or state Civil service officer of the rank of Sub Divisional Magistrate (SDM).
The Piro Tehsil is divided into 3 Blocks, each headed by a Block Development Officer (BDO). List of Blocks is as follows:
Piro Balua Tola is one of the most developed village in Piro block.
Piro block contains the following 109 villages: