Sports wagering revenue amounted to $4.96m (£3.95m/€4.94m) in the first full month of regulated activities in Iowa, with online betting the most popular form of gambling in the state.
Players placed a total of $38.5m in sports bets in September, winning a collective $33.6m in the process. Licensed operators paid $334,553 in tax last month, according to figures from the Iowa Racing and Gaming Commission.
Consumers spent more online than at retail locations, with total internet sports betting spend amounting to $21.8m in September. Operators generated $2.0m in collective revenue from internet wagering.
However, land-based activities generated more revenue ($2.9m) for licensees, despite punters spending less ($16.7m) at retail sportsbook sites.
The William Hill-powered offering at the Prairie Meadows Racetrack and Casino was the leading operation by some margin, generating $1.5m in revenue from $14.5m in sports bets.