The Pew study found particularly impressive growth numbers for VoIP, indicating that roughly one quarter of all American adults who use the Internet (and about 19 percent overall) have placed a phone call online. Each day, 5% of Internet users in the U.S. make VoIP calls.
When considering the VoIP usage numbers for past years, these percentages are even more impressive. Pew's research had never shown more than 10 percent of users who had placed VoIP calls. In 2007, for instance, only eight percent of users had made VoIP calls, with two percent making calls on any given day.
By age group, Pew's research showed that the highest percentage (27 percent) of VoIP users, not surprisingly came from the 18 to 29 age group. On a household income level, 37 percent of households with income exceeding $70,000 had made a phone call using VoIP.