WSJ.com - Online Use Creeps Higher: "More than 60% of American adults are online at home, up from 57% in late 2002, according to the latest poll from Harris Interactive.
The poll examines Internet use among adult Americans, and finds that while wealthier and highly educated Americans are more likely to be online, the difference in usage rates between demographic groups is narrowing.
For instance, among all Internet users, 40% didn't attend college; that compares with a 47% figure in the overall adult population. Also, 15% of Internet users have household incomes of less than $25,000, which compares with a 19% of adults."
Includes several charts