Players in Iowa spent $233.5m (£179.7m/€214.6m) on sports betting in March, up 44.7% year-on-year, while revenue in the state also increased 6.7% to $14.4m.
The March total was significantly higher than the $161.4m wagered in the same month last year, while it was also 8.2% more than the $215.9m bet by consumers in February this year.
Of the total $233.5m wagered in March, some $208.3m was bet online, while the remaining $25.3m was spent at retail sportsbooks across the state.
In terms of revenue, this was up from $13.5m in March last year, which at the time was a new monthly record for the state, while the total was 67.4% higher than $8.6 in February 2022. The $14.4m recorded was the second-highest total since the market opened.
Online revenue in March amounted to $12.6m, while retail revenue reached $1.8m.
The Diamond Jo Casino in Dubuque, which operates a FanDuel sportsbook, moved into first place in the market with $3.9m in revenue from $48.8m in bets.
Sister casino property Diamond Jo Casino in Worth, which is partnered with FanDuel, ranked second with $2.6m in revenue off $30.5m in wagers, then Wild Rose Casino Jefferson and its DraftKings sportsbook with $1.4m from $31.3m in bets.