Nawatanwa is a village in Sidhaw tehsil in district of Pashchim Champaran, Bihar, India. As per the data provided by Census of India in 2011, total population of Nawatanwa was 3,662 which includes 1,857 males and 1,805 females. Nawatanwa covers 639.8 ha area. Pincode of Nawatanwa is N/A.