The total area of Pallavaram is 80 km² including Kundrathur and Mangadu Firkas forming a largest taluk.Since 2019, Kundrathur and Mangadu Firkas are carved out from Pallavaram Taluk to form the new Kundrathur Taluk under Kancheepuram District.So, the total area of Pallavaram Taluk will shrink to 52 km² covering Pallavaram and Pammal firkas.