Sain Berauna is a village in Paterhi Belsar tehsil in district of Vaishali, Bihar, India. As per the data provided by Census of India in 2011, total population of Sain Berauna was 4,063 which includes 2,105 males and 1,958 females. Sain Berauna covers 242.2 ha area. Pincode of Sain Berauna is 844133.