winter vary between 35 °C to 18 °C. The average annual rainfall in the plains is around 700mm with the North East and the South West monsoons contributing to 47% and 28% respectively to the total rainfall. The major rivers flowing through the district are Noyyal and Amaravathi. The Amaravati river is the main source of irrigation in the district. Amaravathi Dam, which created Amaravathi Reservoir, is located at Amaravathinagar. Thirumurthy dam which is created by the PAP project is situated in this district. Both Amaravathi dam and Thirumurthy dam are the prime source of irrigation in the district, whereas Uppaar dam is another dam which receives water from seasonal rains. Demographics According to 2011 census, Tiruppur district had a population of 2,479,052 with a sex-ratio of 989 females for every 1,000 males, much above the national average of 929. 61.35% of the population lived in urban areas. A total of 241,351 were under the age of six, constituting 123,612 males and 117,739 females. Scheduled Castes and Scheduled Tribes accounted for 15.97% and 0.22% of the population respectively. The average literacy of the district was 71.02%, compared to the national average of 72.99%. The district had a total of 712,210 households. There were a total of 1,266,137 workers, comprising 130,331 cultivators, 216,945 main agricultural labourers, 36,139 in house hold industries, 785,181 other workers, 97,541 marginal workers, 5,486 marginal cultivators, 29,388 marginal agricultural labourers, 4,849 marginal workers in household industries and 57,818 other marginal workers. At the time of the 2011 census, 83.82% of the population spoke Tamil, 11.04% Telugu, 2.29% Kannada, 1.19% Malayalam and 0.93% Urdu as their first language. Politics |} Administration and politics Tiruppur district is administered by a collector, presently K. Vijaya Karthikeyan. Parliamentary constituencies: Tiruppur (Part) Pollachi (Part) Coimbatore (Part) Erode (Part) The Nilgiris (Part) Assembly constituencies: Revenue divisions Dharapuram Tiruppur Udumalpet Municipal corporations: Tiruppur Municipal Corporation (TCMC) Municipalities Town Panchayats Economy The city of Tirupur, at the heart of the district, is a textile center. The agricultural sector is predominantly small and has marginal farmers with land holdings of less than two hectares. See also Andiagoundanoor List of districts of Tamil Nadu Thandukkaran palayam Kongu Tamil References External links District website Districts of Tamil Nadu 2009 establishments in Tamil Nadu