Tribal people are concentrated mainly in the Nilgiris district. Major Tribes in Tamilnadu are Kodas, Thodas, Irulas, Kurumbas and Badagas, Kattunayakan and Paliyan.
They form larger groups, mainly have pastoral works. The tribal population in Tamil Nadu as per the 2011 census is 7,94,697.
Tamil Nadu has 38 tribes and sub-tribes. These people depend mainly on forest lands and agriculture.
Major Tribes in Tamilnadu
Toda

Men from these tribes are occupied in Milking and grazing with buffaloes. Toda’s settlement is known as Munds. These people do not worship any god, and their consciousness is cosmic.
Toda live in Nilgiris.
Badaga

They belong backward class and are not classified as Tribal. Badaga was an agricultural community, with dwellers in the higher plateau of Nilgiris district.
They also engaged in tea cultivation and potato growing and also have a rich oral tradition of folk tales, songs, and poetry.
They belong to the Shiva Section of the Hindu religion.
Kota

Kota tribe is concentrated in the Tiruchigadi area in Nilagiri Hills. They are known for Folk dances and are musicians who play at Badaa funerals.
These are engaged in funerals. They are experts in Iron Smiths, Potters, and carpenters. Kota implements elaborate tattoos in order to maintain status in society.
Kurumbas

They are known for Black Magic and witchcraft. From Hunters and Gathering, they change to working in Tea and Coffee Plantations.
They are the only caste in the state to a distinctive language known as Kurumbas Language.
Irula

They occupy the lower slopes and forest of Nilgiris Hills. They are second largest after the Badagas tribe and are similar to Kurumbas in characters. They produce Honey, fruits, herbs, roots, gums, dyes, etc. They also trade with people in the plains.
They are famous for catching snakes and collecting snake venom.
Paliyan

The Paliyan, or Palaiyar or Pazhaiyarare are a group of around 9,500 formerly nomadic Dravidian tribals living in the South Western Ghats.
They’re food gathering communities. It is believed that the Paliyan tribe belongs to Palani Hills. They are distributed in districts of Madurai, Thanjavur, Pudukkottai, Tirunelveli, and Coimbatore.
Paliyar tribes were once nomadic, and now they are more progressive than modern society.