According to the Iowa Racing and Gaming Commission, 2018 was the best revenue year for casinos in six years, raking in about $1.5 billion.
Source: KWWL Special Report: Casino gaming on the rise in Iowa

According to the Iowa Racing and Gaming Commission, 2018 was the best revenue year for casinos in six years, raking in about $1.5 billion.
Source: KWWL Special Report: Casino gaming on the rise in Iowa