Bai Ka Bas is a village in Lachhmangarh tehsil in district of Alwar, Rajasthan, India. As per the data provided by Census of India in 2011, total population of Bai Ka Bas was 1,050 which includes 543 males and 507 females. Bai Ka Bas covers 399.35 ha area. Pincode of Bai Ka Bas is 301001.