Sorry Ward, the media market is not defined as the number of stations in existence. It is defined as: "A region where the population can receive the same (or similar) television and radio station offerings, and may also include other types of media including newspapers and Internet content." 

From USA Today: "Sinclair Broadcast Group, the largest U.S. broadcaster, will acquire Tribune Media Co., in a deal worth nearly $4 billion that will put the combined company's stations in nearly three quarters of Americans' homes."