Krishna District is a district of India's Andhra Pradesh state. It is named after the Krishna River, the fourth longest river that flows within India, flows through the district and joins Bay of Bengal here in this district. It has a population of 4,529,009 of which 41.00% is urban as of 2011.
Machilipatnam is the administrative headquarters for the district. Vijayawada is the biggest city in the district and also the commercial center of the state. The district is bounded to the north-west by Khammam District, to the north-east by West Godavari District, to the south-east by the Bay of Bengal, to the southwest by Guntur District, and to the west by Nalgonda District