Prior to 1964, Tambaram was a small panchayat. In 1964 it was constituted as a Grade III Municipality comprising the Village Panchayats of Pulikoradu, Kadapperi, Tambaram, Irumbliyur, and Selaiyur. Due to rapid development and growth of the town commercially and residentially, the Municipality is now classified as a 'Selection Grade Municipality'. The extent of the municipality is 20.72 km2. The revenue villages under this municipality are Pulikoradu, Kadapperi, Tambaram, Irumbliyur, and Selaiyur. The number of households is 26,333, the number of notified slums is 17 and the number of unnotified slums is 7.