How many Facebook users are there in the U.S.? This statistic shows the number of Facebook users in the U.S. as of January 2018, by age. During that time, 58.3 million U.S. Facebook users were between 25 and 34 years old.
Jan 27, 2021 ... As of January 2018, there were 58.3 million U.S. Facebook users within that
particular age range, far more than among any other age group.