Nidagallu is a village in Seethanagaram tehsil in district of Vizianagaram, Andhra Pradesh, India. As per the data provided by Census of India in 2011, total population of Nidagallu was 3,701 which includes 1,847 males and 1,854 females. Nidagallu covers 1029 ha area. Pincode of Nidagallu is 535546.