the people or number of people who listen to a radio station, record, type of music, etc.: The station has a listenership of 200,000.
Origin of listenership
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
all the listeners collectively of a particular radio programme, station, or broadcaster
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012