TRAVELGamblingAdd TopicThe top 20 gambling markets in the U.S.These are the top Casino and Racetrack markets in the U.S. according to the American Gaming Association. No. 1: Las Vegas Strip, $6.3 billion total revenue in 2015.Ethan Miller, Getty ImagesNo. 2: Atlantic City, $2.4 billion.Getty Images/iStockphotoNo. 3: Chicagoland, $2 billion.Getty Images/iStockphotoNew York City, $1.4 billion.Kathy Kmonicek, APDetroit, $1.4 billion.Kimberly P. Mitchell, Detroit Free PressBaltimore/D.C., $1.3 billion.Paul Morigi, Getty Images For MGM National HarborPhiladelphia, $1.2 billion.Matt Rourke, APMississippi Gulf Coast, $1.1 billion.Hard Rock InternationalSt. Louis, $1 billion.Getty Images/iStockphotoThe Poconos (Pa.), $965 million.Mark Moran, APLake Charles, La., $9.07 million.Getty Images/iStockphotoBoulder Strip, Nev., $784 million.Steve Marcus For USA TODAYKansas City (Kan. and Mo.), $782 million.Getty Images/iStockphotoShreveport, Bossier City, La., $732 million.Getty Images/iStockphotoReno/Sparks, Nev., $694 million.Getty Images/iStockphotoBlack Hawk/Central City, Colo., $674 million.Ed Andrieski, APNew Orleans, $626 million.Eileen Blass, USA TODAYTunica/Lula, Miss., $626 million.Getty Images/iStockphotoPittsburgh/Meadowlands, Pa., $600 million.Getty Images/iStockphotoCincinnati, $598 million,Al Behrman, APFeatured Weekly Ad