The Pew Research Center survey released ahead of the 25th anniversary of the World Wide Web found 53 percent of US Internet users would find it "very hard" to give up Web access, up from 38 per cent in 2006.
Even when counting those who don't go online, Pew said 46 per cent of all adults would find it hard to give up the Internet.
By contrast, Pew's survey showed 35 percent of all US adults television would be very hard to give up, compared with 44 per cent in 2006.
The cell phone comes in a close second to the Internet: 49 per cent of mobile phone owners said it would be difficult to give up their handset, up from 43 per cent in 2006. That amounts to 44 per cent of all adults who say now that their cell phone would be very hard to live without.
Meanwhile landline telephones are losing favor.
Just 28 per cent of landline telephone owners said it would be a hardship to live without this, a big drop from 48 per cent in 2006. Because many people have already dropped their landlines, the finding means that just 17 per cent of all adults would find their landline very hard to give up.
Pew also found that Americans are using the Web more often: 71 per cent go online on a typical day, compared with 29 percent in 2000.
In 1995, 42 per cent of US adults had never heard of the Internet and another 21 per cent had only a vague notion of what it was.
The rise of mobile device use represents the biggest shift in access in recent years: 68 per cent of US adults now access the Internet on a cell phone, tablet, or other mobile device, at least occasionally, Pew found.
