Lamar Advertising Company operates as an outdoor advertising company in the United States. It sells advertising space on billboards, including bulletins and posters; logo signs located near highway exits; and exterior and interior of public transportation vehicles, transit shelters, and benches in 60 markets. As of December 31, 2012, the company owned and operated 144,000 billboard advertising displays in 44 states, Canada, and Puerto Rico; 115,000 logo advertising displays in 22 states and the province of Ontario, Canada; and operated over 34,000 transit advertising displays in 15 states, Canada, and Puerto Rico. Lamar Advertising Company was founded in 1902 and is headquartered in Baton Rouge, Louisiana.