Punai Gaon is a village in Sissibargaon tehsil in district of Dhemaji, Assam, India. As per the data provided by Census of India in 2011, total population of Punai Gaon was 1,000 which includes 525 males and 475 females. Punai Gaon covers 286.8 ha area. Pincode of Punai Gaon is 786110.