Piro 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.

As of 2001[update] India census,[4] Piro had a population of 25,638.

As of 2011[update] the population of the town of Piro was 45,000 in 7,033 households.

[3] [failed verification] The Piro sub-division (Tehsil) is headed by an IAS or state Civil service officer of the rank of Sub Divisional Magistrate (SDM).