Karamwa is a village in Majhaulia tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Karamwa was 5,060 which includes 2,676 males and 2,384 females. Karamwa covers 675 ha area. Pincode of Karamwa is 845454.