Coastal Andhra (South costal Andhra) also known as is a region in the state of Andhra Pradesh, India. Vijayawada is the largest city in this region. It was part of Madras State before 1953 and Andhra State from 1953 to 1956. According to the 2011 census, it has an area of 91,915 square kilometres (35,489 sq mi) which is 57.99% of the total state area and a population of 34,193,868 which is 69.20% of Andhra Pradesh state population. This area includes the coastal districts of Andhra Pradesh on the Circar Coast between the Eastern Ghats and the Bay of Bengal, from the northern border with Odisha to Tirupati district in the South.