 census of India, the region with four districts had a population of 15,184,908 and covers an area of .Anantapur is largest among other districts.The present-day region of Rayalaseema in Andhra Pradesh was officially referred to as the '"Ceded Districts"' ("'Datta Maṇḍalālu"' in Telugu) under the British Madras Presidency, since the districts had been ceded by the Nizam of Hyderabad to the British.