Soniyasar Unchaira 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 Soniyasar Unchaira was 1,256 which includes 645 males and 611 females. Soniyasar Unchaira covers 1649.28 ha area. Pincode of Soniyasar Unchaira is 331803.