Lahar Kotlu is a village in Nadaun tehsil in district of Hamirpur, Himachal Pradesh, India. As per the data provided by Census of India in 2011, total population of Lahar Kotlu was 975 which includes 453 males and 522 females. Lahar Kotlu covers 140.09 ha area. Pincode of Lahar Kotlu is 177046.