Manjhiaon is one of the administrative blocks of Garhwa district, Jharkhand state, India.About Manjhiaon Garhwa JharkhandManjhiaon a Taluka/Block, close to Garhwa, is located 20 km from Garhwa. Manjhiaon is located near koel river. It's well covered by Vodafone, Airtel, Uninor, Reliance, BSNL, Aircel, Idea, Airtel 3G, like cellular networks.LanguagesLanguages spoken here include Asuri, an Austroasiatic language spoken by approximately 17 000 in India, largely in the southern part of Palamu; and Bhojpuri, a tongue in the Bihari language group with almost 40 000 000 speakers, written in both the Devanagari and Kaithi scripts.FacilitiesMarket: A small market called as Manjhiaon bazar is situated in middle of the block.