In what region are the Dravidian languages mainly spoken?

The Dravidian languages are a language family spoken by more than 215 million people, mainly in southern India and northern Sri Lanka, with pockets elsewhere in South Asia. Since the colonial era, there have been small but significant immigrant communities outside South Asia in Mauritius, Hong Kong, Singapore, Malaysia, Indonesia, Philippines, Britain, Australia, and the United States.

The Dravidian languages are first attested in the 2nd century BCE as Tamil-Brahmi script inscribed on the cave walls in the Madurai and Tirunelveli districts of Tamil Nadu. The Dravidian languages with the most speakers are (in descending order of number of speakers) Telugu, Tamil, Kannada and Malayalam, all of which have long literary traditions. Smaller literary languages are Tulu and Kodava.

Only two Dravidian languages are spoken exclusively outside the post-1947 state of India: Brahui in the Balochistan region of Pakistan and Afghanistan; and Dhangar, a dialect of Kurukh, in parts of Nepal and Bhutan.

Though some scholars have argued that the Dravidian languages may have been brought to India by migrations from the Iranian plateau in the fourth or third millennium BCE or even earlier, the Dravidian languages cannot easily be connected to any other language family and they could well be indigenous to India.