Chittoor district (pronunciation (help·info)) is one of the eight districts in the Rayalaseema region of the Indian state of Andhra Pradesh. The district headquarters is located at Chittoor. It has a population of 18,72,951 according to 2011 census of India. It lies in the Poini River Valley of southernmost Andhra Pradesh along the Chennai–Bangalore section of Chennai-Mumbai highway. Chittoor district is a major market centre for mangoes, grains, sugarcane, and peanuts. From Wikipedia