Specific information or characteristics pertaining to a population or a target audience that is used for marketing to that population or target audience. Demographics typically include information such as age, sex, geographic location and size of the target group. For example, in Internet marketing, where a company sells information or services to clients to help them make money online, the target audience for such products and services is predominantly male, ages 25-45, US citizen, average income 40K plus. Now of course there are lots of women that buy and sell Internet marketing material online and there are plenty of folks around the world that do so as well. Lots of 21 and 22 year olds buy Internet marketing products and services. But studying the characteristics of this target group will tell you that the largest target audience for Internet marketing products is comprised of relatively affluent and educated U.S. males between 25 and 45.