Demographics
| Historical population | ||
|---|---|---|
| Year | Pop. | ±% |
| 1951 | 5,979 | — |
| 1961 | 13,050 | +118.3% |
| 1971 | 77,413 | +493.2% |
| 1981 | 124,701 | +61.1% |
| 1991 | 183,215 | +46.9% |
| 2001 | 230,913 | +26.0% |
| 2011 | 344,701 | +49.3% |
As of 2001 India census, Avadi had a population of 230,913. Males constitute 52% of the population and females 48%. The nearby residential areas are the Vellanur Panchayat and Vellanur Village, Muthapudupettai, Defence Enclave, Veerapuram, Mittanemalli, Kovil Padaghai, Brindavan Nagar, Rajiv Nagar, Kamaraj Nagar, Gandhi Nagar, Sabhi Nagar, Shanthi Nagar, Marshal Nesamani Nagar and Poompuzhil Nagar wherein most of employees of the defence organizations live with their families. People from different ethnicities live in Avadi. And the fast developing area in Avadi, vasantham nagar,rajbai nagar on the avadi- poonamallee highway. Avadi, comprising a cluster of areas such as Thirumullaivoyal, Muthapudupet and Pattabiram, one of the largest municipalities in the State. Though the municipality has a vast area of 65 km² under its jurisdiction, nearly 25 km² comes under the defence establishments’ control.
From a municipality in 1970s, the local body has now become a Special Grade Municipality owing to rapid development of the area. It has a population of 3.2 lakh spread over 48 wards.
Avadi is considered to be among the safest places in and around Chennai where you get both the facilities of city life and the relaxed countryside life.
From 229,403 in 2001, the population of Avadi has grown to 344,701 in 2011, registering a decadal population growth of 50 percent.
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