Up Mahal Kayarnu is a village in Nerua tehsil in district of Shimla, Himachal Pradesh, India. As per the data provided by Census of India in 2011, total population of Up Mahal Kayarnu was 113 which includes 67 males and 46 females. Up Mahal Kayarnu covers 109 ha area. Pincode of Up Mahal Kayarnu is 173210.