Mariyahu is located at 25.62°N 82.62°E / 25.62; 82.62. It has an average elevation of 87 metres (285 feet).
As of the 2001 Census of India, Mariahu had a population of 20,142. Males constitute 53% of the population and females 47%. In Mariahu, 17% of the population is under 6 years of age.
Most of the young population of Mariyahu migrates towards big metro cities of India especially Mumbai for the purpose of higher education and employment.
Mariahu has an average literacy rate of 59%, lower than the national average of 59.5%: male literacy is 67%, and female literacy is 50%. Mariahu has 'Mariahu PG college' and 'Kaushilya Mahavidyalaya' and 'Shri Dawarika Shikshan Sansthan' Mariahu Jaunpur.for higher education.Mariahu has Saint Xavier School for secondary education.
Mariahu is connected with major cities of India through Indian Railways network. It has a small railway station which belongs to Northern Railway. Station Code is MAY. Total 4 Express Trains Stops at this Station. Neighbourhood Stations are Warigaon Newada and Sudnipur. Near By major Railway Stations are Jaunpur and Janghai Junction. There is local passenger Allahabad - Jaunpur Passenger which haults at Mariahu Railway Station to and from Jaunpur to Allahabad and Allahabad to Jaunpur
The train no. 11055 - 'Godan Express' ,' Chapra Express ",departing from Mumbai stops at this Station. This train is very famous among local people who travels from & to Mumbai.
Driving distance from Mariahu to District headquarters Jaunpur is 18 km. Jaunpur is well connected to Lucknow, Varanasi, Allahabad and other cities of Uttar Pradesh. Quick road transport is available for Jaunpur , Bhadohi, Mirzapur. Air
Near by Airport to Mariahu is Babatpur (Varanasi) Airport. Road Distance or driving distance from Mariahu to Babatpur is 35 km. Your total travel time is approximately 0 hour(s) 44 min(s); which may vary depending upon the road and traffic conditions.
Mariahu is an OBC Dominated constituency. Deciding factor in any election here is Yadav and Patel votes. Shraddha Yadav of Samajwadi Party (SP) is a sitting MLA of Mariahu constituency. Shraddha defeated her immediate rival Savitri Patel of Bahujan Samaj Party (BSP) by a margin of 12477 in 2012 Assembly election.
The biggest celebrations in Mariahu are Durga Pooja & Bharat Milap as yearly festival. Pupils also organise big celebrations on Eid-ul-Fitr, Holi, Ramzan-ul-Mubarak, Diwali, Raksha Bandhan and more other occasions.
Shivakant verma-A prominent and inspiring personality.Being a highly qualified teacher sri verma was intrumental in shaping the future of his disciples.Many laterly acclaimed scholars were his students