Derajsar is a village in Sardarshahar tehsil in district of Churu, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Derajsar was 2,681 which includes 1,376 males and 1,305 females. Derajsar covers 2982.9 ha area. Pincode of Derajsar is 331402.