Kotasirlam is a village in Ramabhadrapuram tehsil in district of Vizianagaram, Andhra Pradesh, India. As per the data provided by Census of India in 2011, total population of Kotasirlam was 2,083 which includes 1,025 males and 1,058 females. Kotasirlam covers 888 ha area. Pincode of Kotasirlam is 535579.