Vellore is a city and the administrative headquarters of Vellore District in the South Indian state of Tamil Nadu. Located on the banks of Palar River in the north-eastern part of Tamil Nadu and has been ruled, at different times, by the Pallavas, Medieval Cholas, Later Cholas, Vijayanagar Empire, Rashtrakutas, Carnatic kingdom, and the British. Vellore has four zones (totally 60 wards) which covers an area of 87.915 Sqkm and has a population of 4,23,425 based on 2001 census. It is located about 145 kilometres (90 mi) west of the state capital Chennai and about 211 kilometres (131 mi) east of Karnataka capital Bengaluru. Vellore is administered by a Vellore Municipal Corporation under a mayor.