Bottom Line: It looks like the average Twitter power user is a 25-44 year old male. On the flip side, the overall average age skews much younger, representing the 18-24 demographic.

Twitter Trends

Twitter users are 10% more likely to be male than the average internet user. This skew is nearly identical across all three Usage groups.

Twitter skews heavily towards the college/twenty-something crowd. Twitter attracts 18-24 year-olds at nearly twice the rate of an average U.S website.

Splitting age demographics based on usage intensity shows that heavy users tend to skew older than visitors who only hit the site once a month. This could indicate that while the younger segments are more exploratory, the 25-44 year old segments have found more value in Twitter and started to ramp up usage.

(via Compete)