Number of US Facebook Users Over 35 Nearly Doubles in Last 60 Days

Don’t look now, but the number of Americans over 35, 45, and 55 on Facebook is growing fast. In the last 60 days alone, the number of people over 35 has nearly doubled. Developers and marketers may want to think about how to serve this group of new users.

Here are the latest stats on Facebook’s US audience gender and age demographics, according to the company:

Facebook US Audience Growth, Last 180 Days

Looking at Facebook US audience growth over the last 180 days, it’s clear that Facebook is seeing massive increases in adoption amongst users 35-65. The fastest growing demographic on Facebook is still women over 55 – there are now nearly 1.5 million of them active on Facebook each month.

The biggest growth in terms of absolute new users over the last six month came amongst users 35-44. Over 4 million more US women 35-44 and nearly 3 million more US men 35-44 used Facebook in March 2009 compared to September 2008.

US Facebook Users By Age and Gender

With the rapid growth amongst older users, the majority of US Facebook users are now over 25. There are now 6 million users 13-17, 19.5 million 18-25, 13.4 million 26-34, 9.7 million 35-44, 4.6 million 45-54, and 2.8 million over 55. In other words, there are more Facebook users 26-44 than 18-25 today.