Kalthunuru is a village in Vararamachandrapuram tehsil in district of Khammam, Telangana, India. As per the data provided by Census of India in 2011, total population of Kalthunuru was 228 which includes 106 males and 122 females. Kalthunuru covers 200 ha area. Pincode of Kalthunuru is 507135.