Singarajanahalli is a village in Mantralayam tehsil in district of Kurnool, Andhra Pradesh, India. As per the data provided by Census of India in 2011, total population of Singarajanahalli was 586 which includes 290 males and 296 females. Singarajanahalli covers 352 ha area. Pincode of Singarajanahalli is 518397.