Longlaihansu is a village in Umrangso tehsil in district of Dima Hasao, Assam, India. As per the data provided by Census of India in 2011, total population of Longlaihansu was 157 which includes 80 males and 77 females. Longlaihansu covers 15 ha area. Pincode of Longlaihansu is N/A.