According to the Arbitron report, 125 million American adults over the age of 18--about 55% of the adult population--listen to radio in the car, representing 35% of all network radio listening. However, 40% of adults also report listening to network radio at home. Overall listening is distributed almost evenly between men and women.
The Arbitron findings come less than a month after another study by American Media Services which found that 63% of American adults report listening to radio every day. 72% of respondents saying they listen to radio at least as frequently as they did five years ago, if not more. Meanwhile, radio's online properties are also popular: in September a report from the Media Audit revealed that 18% of Americans on the Internet visit the Web site of a radio station at least once a month.