Nice to mention that the stats for the Americas region have all been updated as of June 30, 2016.
The Organization for Economic Cooperation and Development (OECD) is a unique forum where the governments of 35 democracies with market economies work with each other, as well as with more than 70 non-member economies to promote economic growth, prosperity, and sustainable development. The list of the 35 OECD member countries, their population, Internet and Facebook subscribers is available at Internet World Stats.
A complete table with the G20 (Group of Twenty) members has been created, showing the Internet users and Penetration for June, 2016. The number of Facebook subscribers is also displayed. There are also links to G20 information websites.
The IWS database shows 3,267,556,281 Internet users and a penetration rate of 45.0% in the world, as of June 30, 2015. This figure shows an increase over the initial estimate of September 10 due to new stats from India. Mid-year 2015 world population is estimated at 7,260,621,118. See more.
In China, currently nearly 89% of Internet users use smartphones to go online, according to the CNNIC.
In the United States nearly two-thirds of Americans are now smartphone users, and for many these devices are their entry point to the Internet world, according to the PEW Research Center.
Worldwide, eMarketer forecasts that by 2018 there will be over 2.73 billion smartphone users. In the Internet Report by KPCB, some very interesting aspects of time spent per day by Adult Internet users. A report summary can be seen at Technology Personalized.
In the United Kingdom, an Ofcom survey has confirmed that smartphones are the main device for going online. Two thirds of the population own a smartphone using it for nearly two hours every day to browse the internet, access social media, bank and shop online.