Langkai Gaon is a village in Kaliabor tehsil in district of Nagaon, Assam, India. As per the data provided by Census of India in 2011, total population of Langkai Gaon was 394 which includes 213 males and 181 females. Langkai Gaon covers 17.38 ha area. Pincode of Langkai Gaon is 782135.