Area Note 1: The pre expansion area of city limits was 105.6 sq.km. The 2010 expansion order added 12 local bodies and increased the total area to 265.36 sq.km. However in 2011, three of the local bodies were dropped from the expansion and two more added instead. Those removed were – Vellalore (16.64 sq.km), Chinniampalayam (9.27 sq.km) and Perur (6.40sq.km). Those added were – Vellakinar (9.20) and Chennavedampatti (4.5). So the actual area post expansion is 246.75 sq. km.
Population Note 1: The census 2011 data is available only for pre expansion city limits. For the expanded city limits only 2001 census data is available. Pre expansion the population was 930882. After the 2010 expansion GO, the population became 1262122. But after the small changes mentioned in the previous note were made, the 2001 population figure was 1250446. However the 2011 census data for the urban agglomeration is available and has been provided.