Twenty-six of the 27 states featured below have approved sports betting online.Īmong the other types of gambling, six states have legalized online casinos: Connecticut, New Jersey, Pennsylvania, Delaware, West Virginia, and Michigan. Sports betting is the most popular-and the most widely legalized-form of online gambling, skyrocketing from $4.34 billion in gross revenue in 2021 to $7.50 billion in 2022, according to the American Gaming Association.