Iowa is becoming the 11th state to allow sports betting, and six casinos say they're ready to sign up players and begin taking bets.
New regulations allow betting to begin at noon Thursday.
Casinos in Altoona, Bettendorf, Osceola, and Waterloo will offer betting on-site and through a mobile app.
Casinos in Burlington and Council Bluffs will offer on-site betting only for now until their mobile systems are set up.
Gambling regulators say at least two more casinos could be approved by the end of the day.