Thellar block is a revenue block in the Tiruvannamalai district of Tamil Nadu, India. It has a total of 61 panchayat villages.
Revenue blocks, revenue circles or firka are the local revenue sub-divisions of the various districts of the states of India. These blocks should not be confused with the similar Panchayath union blocks (Blocks) and taluks. The revenue blocks exist to simplify local administration, and each consists of a small number of revenue villages, governed by a Revenue Inspector. The Revenue Inspector is charged with a number of key administrative roles, most notably the identification and collection of tax revenue. Sometimes the land area in a revenue circle is identified as an ILRC for administrative purposes. While Revenue blocks may be as large as or larger than a tehsil, revenue circles are generally smaller. In the state of Tamil Nadu alone, there are 1,127 revenue blocks.
Tiruvannamalai District is one of the 32 districts in the state of Tamil Nadu, in South India. It was formed in the year 1989 from non-existing North Arcot District as Tiruvannamalai Sambuvarayar and Vellore Ambedkar. Tiruvannamalai town is the district headquarters. The district is divided into 12 Taluks - Aarani, Chengam, Tiruvannamalai, Polur, Thandarampattu, Vandavasi, Kalasapakkam, Chetpet, Cheyyar and Vembakkam. Arani is famous for silk sarees. As of 2011, the district had a population of 4,164,875 with a sex-ratio of 994 females for every 1,000 males.
Tamil Nadu is one of the 29 states of India. Its capital and largest city is Chennai. Tamil Nadu lies in the southernmost part of the Indian subcontinent and is bordered by the union territory of Puducherry and the South Indian states of Kerala, Karnataka, and Andhra Pradesh. It is bounded by the Eastern Ghats on the north, by the Nilgiri Mountains, the Meghamalai Hills, and Kerala on the west, by the Bay of Bengal in the east, by the Gulf of Mannar and the Palk Strait on the southeast, and by the Indian Ocean on the south. The state shares a maritime border with the nation of Sri Lanka.
