Dhalai Bil is a village in Na Duar tehsil in district of Sonitpur, Assam, India. As per the data provided by Census of India in 2011, total population of Dhalai Bil was 883 which includes 450 males and 433 females. Dhalai Bil covers 139.17 ha area. Pincode of Dhalai Bil is N/A.