Facebook’s Social Ads Platform publishes statistics on the demographics of its audience for the sake of people looking to use their ad platform. I’ve embedded the full spreadsheet of data below but the surprising thing that jumps out is that the young users are declining at a rate of almost 20%. Some theories as to why this is so include:

• Parental monitoring of Facebook accounts makes the service less appealing to their kids
• The younger demographics hit their saturation point long ago and their is less possible growth in that area
• The platform has lost its cool by becoming more mainstream
• Advertising and marketing clutter tends to drive the younger audiences away because of their BS radar

What are your theories?  What will they flock to next?  Or will Facebook reverse this trend as it moves beyond the functionality on its site and embeds itself into the experience of other sites via Facebook Connect and their API?

Facebook Demographics Statistics 2009