Mairwa Karan is a village in Kuchaikote tehsil in district of Gopalganj, Bihar, India. As per the data provided by Census of India in 2011, total population of Mairwa Karan was 968 which includes 425 males and 543 females. Mairwa Karan covers 75.79 ha area. Pincode of Mairwa Karan is 841503.