India has overtaken the US to become the world's second largest online population

"India has overtaken the United States to become the world's second largest Internet market, with 333 million users, trailing China's 721 million. But a new report released today by the UN Broadband Commission for Sustainable Development also confirms that just six nations – including China and India – together account for 55% of the total global population still offline, because of the sheer size of their populations.
While Internet access is approaching saturation in richer nations, connectivity is still not advancing fast enough to help bridge development gaps in areas like education and health care for those in poorer parts of the world, according to the 2016 edition of The State of Broadband report.
Globally, an estimated 3.9 billion people are not using the Internet. But the Commission's new report estimates that, between them, China, India, Indonesia, Pakistan, Bangladesh and Nigeria account for 55% of all unconnected people, while 20 countries – including the US – account for a full 75% of those not using the Internet. These findings suggest that targeted efforts in just a few key markets could help enormously in redressing the gaping 'digital divide' between those who are online and those still offline."
Source:  Press release from the ITU, 15th September 2016