Sarai Dasu is a village in Lalganj tehsil in district of Pratapgarh, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Sarai Dasu was 461 which includes 233 males and 228 females. Sarai Dasu covers 26 ha area. Pincode of Sarai Dasu is 230402.