More Than Half of U.S., Canada Online

Based on data from the World Factbook 2002, Internet penetration in the United States and Canada is roughly 58 percent. This figures represents more than 182 million users between the two countries.

Of the 165.75 million U.S. users, 122.43 million are estimated to be "active," according to March 2003 data from Nielsen//NetRatings. Nielsen//NetRatings defines active users as the number of people that actually go online in a given month.