English: The map shows the average population density of each state and union territory of India, according to the final numbers from 2011 Census. The district population density varies within each state.

Source: Census 2011 Final, Ministry of Home Affairs, Government of India (may need subscription)

The data is mirrored on another site: here

Netherlands benchmark data is from The World bank

The state of Delhi had the highest population density at 11,320 people per square kilometer, while Arunachal Pradesh had the lowest population density at 17.Only 7 states out of 29, and 3 Union Territories out of 6 had a population density greater than 500 people per sq. km.

The disputed national borders SVG code used to create this map is a derivative work of File:India literacy rate map en.svg available on wikimedia commons.