Chittoor district, also known as Chittur, is a district in Rayalaseema region of Andhra Pradesh, India. The district headquarters is Chittoor City. The district has a population of 4,170,468 according to 2011 census of India, nearly equal to the population of Liberia. Chittoor district is famous for the Tirupati, Kanipakam and Sri Kalahasti temples. It lies in the Poini river valley of southernmost Andhra Pradesh, on the NH4 Bangalore–Chennai highway. It is a major market center for mangoes, grains, sugarcane, and peanuts. Major industries around the city are Amaron Batteries, nation's leading automobile batteries, and Nutrine Confectioneries, a major chocolate/candies producer, and this city is one of the major granite and mango pulp producing centers of India.