Worldwide there are an estimate of 25 million Non-Resident Indians (NRI) and Persons of Indian Origin (PIO) living in countries other than India. Those estimates vary between 25 to over 30 mio. The entire NRI population is dominated by people from the southern indian states. According to recent estimates, over 54% of NRIs have their origin in South India, while only 23% are from the North, followed by 19% from the West and only 5% from East India. More details:
