Katnagallu is a village in Pedda Thippasamudram tehsil in district of Chittoor, Andhra Pradesh, India. As per the data provided by Census of India in 2011, total population of Katnagallu was 2,209 which includes 1,065 males and 1,144 females. Katnagallu covers 1639 ha area. Pincode of Katnagallu is 517391.