Sanwatsar is a village in Sridungargarh tehsil in district of Bikaner, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Sanwatsar was 4,980 which includes 2,636 males and 2,344 females. Sanwatsar covers 3441 ha area. Pincode of Sanwatsar is 331811.