17 September 2026
U.S. online gambling participation is surging in 2024, with wallets and traffic concentrating around a shortlist of properties, data from this year reveals. Grounding all these changes is a widening shift to mobile platforms and apps — a trend reflected in traffic, revenue, and commercial performance outcomes.
From the commercial casino industry, May's figures released by the American Gaming Association this month revealed iGaming in the U.S. was up 23% year-over-year, with online sports betting activity increasing by 18.2%. The result: U.S. online gaming activity totaled $6.17 billion in May, compared with $5.02 billion last year.
This surge followed a strong 2023, during which the organization's annual assessment found most of the U.S. gambling sector's year-over-year 7.9% growth emanated from the digital gaming vertical. Annual U.S. gambling spend hit an all-time high of $54.9 billion.
Critically, that increase was driven primarily by online casinos and poker, which surged 22%, the AGA's report noted.
Mobile is Becoming the Center of U.S. Gambling
Analysis from Mordor Intelligence suggests mobility was a key factor in 2023's gains and the U.S. online casino market's growth to $7.6 billion in 2024, following last year's total base of $6.2 billion.
The firm analyzed casino group American IMARC, which forecasts that the U.S. online casino market will rise to USD 13.5 billion by 2030, projecting mobile device use to grow at 11.3% compounded annual growth rate. As a result, it's now estimated that 68.4% of traffic in the U.S. online gaming market was driven by phones and tablets in 2023. With mobile's share rising, the mobile device use share of user activity in the U.S. online casino market rose from 52.1% in 2020 to 61.8% in 2023.
Traffic Concentration is Driving Growth
Regardless of platform or sector, site traffic has concentrated around a few leading platforms, according to web analytics firm Semrush.
The top gambling site in the U.S. for August was Chumba Casino, which saw 20.1 million visits. Chumba Casino had tended to lead this year, with 24.7 million visits in April, per another Semrush report.
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DraftKings drew 12.4 million visits, likely benefiting from its sportsbook promotions. FanDuel followed closely with 11.9 million visits. Powerball lottery sites collectively accounted for 9.3 million visits during the same period.
Online Casino Growth Remains a Major Engine
U.S. casino operators have found mobile to be a promising market beyond traditional lottery games.
In May, Wall Street Journal reporter Daniel Michaels noted the iGaming expansion was more impactful than many analysts predicted. While adoption has been gradual, growth remains consistent across key metrics.
Industry observers initially underestimated that iGaming revenue would increase by 23% in one year alone. Online sports betting showed an 18.2% gain over the same period. iGaming refers collectively to online casino games, online poker, and online sports betting. The AGA reported record revenue for four consecutive years, with digital platforms driving much of this expansion.
These findings indicate that the U.S. online casino market is a significant driver of growth, with revenue increasing from $6.2 billion in 2023 to $7.6 billion in 2024. The market is projected to reach $13.5 billion by 2030, with mobile devices expected to maintain an 11.3% compound annual growth rate. Mobile devices accounted for 68.4% of the U.S. online gambling market in 2023 and 61.8% of total user activity two years earlier.
The concentration of traffic around leading platforms like Chumba Casino, FanDuel, and DraftKings further underscores mobile's centrality in the U.S. online gambling industry. As the market matures, operators are doubling down on mobile-first approaches to engage the growing base of users preferring smartphones and tablets.
Conclusion
The current traffic and deployment metrics present a clear case: mobile has become the primary driver of expansion and user engagement in America's online casino sector. Operators committing to mobile-first strategies and partnerships are best positioned for future gains in a market projected to reach USD 13.5 billion (a 117% increase from 2020) by 2030, per American IMARC analysis.
