Marai Dih is a village in Patepur tehsil in district of Vaishali, Bihar, India. As per the data provided by Census of India in 2011, total population of Marai Dih was 7,783 which includes 3,963 males and 3,820 females. Marai Dih covers 494 ha area. Pincode of Marai Dih is N/A.