Article continues below advertisementOnline casinos in the US have grown pretty significantly over the past decade or so. With the shift to online games, an industry that you thought would only shine in brick-and-mortar spaces has actually turned into quite the phenomenon. Don't believe it? Well, just let the figures speak for themselves. The legal U.S. online gambling market generated approximately $23 billion in gross gaming revenue (GGR) in 2024. The total commercial online gaming revenue reached an annual record of $22.1 billion in 2024, according to the American Gaming Association (AGA).