South India is the area encompassing the Indian states of Andhra Pradesh, Karnataka, Kerala, Tamil Nadu and Telangana as well as the union territories of Andaman and Nicobar, Lakshadweep and Puducherry, occupying 19.31% of India's area (635,780 km2 or 245,480 sq mi). Covering the southern part of the peninsular Deccan Plateau, South India is bounded by the Bay of Bengal in the east, the Arabian Sea in the west and the Indian Ocean in the south. The geography of the region is diverse with two mountain ranges – the Western and Eastern Ghats, bordering the plateau heartland. Godavari, Krishna, Kaveri, Tungabhadra and Vaigai rivers are important non-perennial sources of water. Chennai, Bangalore, Hyderabad, Coimbatore, Vijayawada and Kochi are the largest urban areas.
Majority of the people in South India speak one of the four major Dravidian languages: Telugu, Tamil, Kannada and Malayalam. During its history, a number of dynastic kingdoms ruled over parts of South India whose invasions across southern and southeastern Asia impacted the history and culture in those regions. Major dynasties that were established in South India include the Cheras, Cholas, Pandyas, Pallavas, Satavahanas, Chalukyas, Rashtrakutas and Vijayanagara. European countries entered India through Kerala and the region was colonised by Britain and other nations.
After experiencing fluctuations in the decades immediately after Indian independence, the economies of South Indian states have registered higher than national average growth over the past three decades. While South Indian states have improved in some socio-economic metrics, poverty continues to affect the region much like the rest of the country, although it has considerably decreased over the years. HDI in the southern states is high and the economy has undergone growth at a faster rate than most northern states. Literacy rates in the southern states are higher than the national average with approximately 80% of the population capable of reading and writing. The fertility rate in South India is 1.9, the lowest of all regions in India.