How many people use WordPress? expandedramblings.com states that there are 74,000,000 WordPress blogs in existence. If you take into account that some blogs are made up of multiple users(contributors), you can guesstimate that the number of WordPress users are well above 74,000,000 for 2012.
In March 2012 WordPress had about 72,000,000 blogs 50% self-hosted and 50% hosted on WordPress.com.
WordPress user statistics
- Female 48%
- Male 52%
- Thirteen to seventeen year olds 1%
- Eighteen to thirty four year olds 40%
- Thirty five year olds and older 58%