18-24-Year-Olds on Facebook Boast an Average of 510 Friends

62% of Americans aged 12 and up report having a profile on a social network, and Facebook is easily dominant, used by 58% of Americans of that age, per results [download page] from a study conducted by Arbitron and Edison Research. Among age groups, 18-24-year-olds are the most likely to have a profile on a social network (86%), and also sport the highest average number of Facebook friends, at 510. (more…)