Online Shopping in US

How many people in the United States have Internet access? This includes Internet at home or high speed Internet?

90% of the US population use the internet, meaning that just 10% of adults say they do not use the internet. However, of that 43%say that they use the internet several times a day. Source

How many people in the United States shop online? Or what percentage of the US population shops online?

The US is one of the leading e-commerce markets, with 224.1 million Americans (14 or older). This means that 68.2% of Americans shop online. Source

How many people use a mobile device to shop online?

Over 67.2% of online shopping is coming from mobile devices. With 35% of consumers saying they ONLY use thier mobile device to shop online. Source