Simlai Pathar is a village in Lanka tehsil in district of Nagaon, Assam, India. As per the data provided by Census of India in 2011, total population of Simlai Pathar was 2,360 which includes 1,223 males and 1,137 females. Simlai Pathar covers 212.83 ha area. Pincode of Simlai Pathar is 782446.