Sawaia Tanr is a village in Rajauli tehsil in district of Nawada, Bihar, India. As per the data provided by Census of India in 2011, total population of Sawaia Tanr was 2,596 which includes 1,347 males and 1,249 females. Sawaia Tanr covers 3072 ha area. Pincode of Sawaia Tanr is N/A.