Tamil Brahmins are Brahmins of Tamil origin primarily living in Tamil Nadu , although a few of them have settled in other states like, Andhra Pradesh, Kerala and Karnataka. They can be broadly divided into three religious groups, Gurukkals who follow Saivism, Iyers who follow the Smarthas tradition and Iyengars who follow Sri Vaishnavism. Today Brahmins form 2.75% of Tamil Nadus population.