Census 2011 is the 15th Census of India since 1872.
Census 2011 was held in two phases: Houselisting& Housing Census (April to September 2010)
Population Enumeration (9th to 28th February 2011)
Reference Date: 0:00 Hours of 1stMarch 2011
Districts 32
Taluks 215
Villages 15979
No. of Statutory Towns 721*
Municipal Corporations 10
Municipalities 148
Town Panchayats 561
Census Towns 374
TownShips 2
Cantonments 2
Tamil Nadu stands 7th among the States & UTs in terms of population.
POPULATION
Top four districts; Chennai, Kancheepuram, Vellore, Thiruvallur.
Last four districts; Perambalur, The Nilgiris, Ariyalur, Karur.
LITERACY RATE; TAMIL NADU-80.3
HIGHEST FOUR; Kanniyakumari, Chennai, Thoothukkudi, The Nilgiris.
LOWEST FOUR; Dharmapuri, Ariyalur, Viluppuram, Krishnagiri.
FEMALE LITERACY RATE; TAMIL NADU-73.9
HIGHEST FOUR; Kanniyakumari, Chennai, Thoothukkudi, Kancheepuram.
LOWEST FOUR; Dharmapuri, Ariyalur, Viluppuram, Krishnagiri.
Density of Population. India 382 Tamil Nadu 555
Decadal variation in population 2001-2011; HIGHEST-Kancheepuram.
LOWEST - The Nilgiris
TAMIL NADU SEX RATIO; 995 HIGHEST-1901(1044) LOWEST 1991 (974)
DISTRICTS WITH LOW CHILD SEX RATIO IN 2011
Dharmapuri
Namakkal
Salem
Theni