This is a list of metropolitan areas by population in the Indian state of Tamil Nadu.
As per the Constitution of India, a metropolitan area is defined as an area having a population of 10 lakh or more, comprised in one or more districts, and consisting of two or more municipalities or panchayats or other contiguous areas, specified by the Governor by a public notification.
[1][2] Chennai is the capital and the largest metropolitan area in Tamil Nadu.
[3] The list is updated for cities wherever metropolitan area data is available with the corresponding sources.
For regions that were expanded post-2011 and no updated population data is available, data corresponding to the old urban area limits as per the 2011 census has been considered.