Many mass media and advertising channels (such as newspapers, magazines, radio stations, etc.) produce media kits or advertising rate cards, which contain information about the audience (circulation figures for print-based products) and online or mobile audience demographics (age, gender, income) for online/digital media. Advertising rate cards may provide current prices for placing advertisements on sites, in print, or across media channels.
To locate the media kits and rate cards through Google: search for the name of the source and the words "media kit" in Google. For example:
The following sources provide additional insight in specific media channels. Some reports are updated annually, while others may have been "one-time only" studies.
A limited amount of public opinion polling data is freely available from various Canadian, American, or global market and public opinion research firms via their web sites.
Some polling data and analysis may be reported in newspapers or archived in a statistical database.