Tiruvallur district, also spelled as Thiruvallur district, is one of the 38 districts (an administrative district) in the Indian state of Tamil Nadu. The fast developing city of Tiruvallur is the district headquarters. The district has a mixture of urban and rural characteristics. The eastern part of Tiruvallur district is dominated by urban characteristics while the Northern part of the district has influence of Andhra culture due to its position. In 2011, the district had a population of 3,728,104 with a sex-ratio of 987 females for every 1,000 males. The district has been divided into three revenue divisions viz, Tiruvallur, Tiruttani and Ponneri. There are four taluks under Tiruvallur division, two under Tiruttani divisions and two under Ponneri division. There are 46 firkas and 820 revenue villages. Likewise there are 12 blocks, five municipalities and ten town panchayats which implement rural development activities.
