Marjadwa is a village in Mainatanr tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Marjadwa was 2,082 which includes 1,088 males and 994 females. Marjadwa covers 180.1 ha area. Pincode of Marjadwa is N/A.