 As of 2011, the town had a population of 57,224.There are plans to merge the areas under Poonamallee Municipality with Avadi Municipal Corporation.The town of Poonamallee is situated at a distance of 23 kilometres from Fort St George and 17 kilometres from Sriperumbudur on the Chennai-Bangalore highway and 12 kilometers from Thiruninravur on Chennai Outer Ring Road.