Sports betting is the most popular and widely legalized form of online gambling, generating $4.3 billion in gross revenue in 2021, according to the American Gaming Association. Twenty-one of the 22 states featured below have approved it.
Among other forms, six states have legalized online casinos, and online poker is now legal in another set of six states. Online gaming, or iGaming, brought in $3.7 billion last year.
Lawmakers in four states not included in this list (Kansas, Maine, Maryland, and Ohio) have legalized online sports betting in recent months, but their laws have yet to take effect. A fifth state, Florida, also passed legislation legalizing online sports betting, but faced additional legal hurdles.
Online gambling was accepted in the United States from the late 1990s until 2006, according to the New York Times. It was then that Congress banned gambling companies from taking online bets for “illegal” transactions.
After the United States Supreme Court struck down a federal ban on sports betting in 2018, some states rushed to legalize them. By the following year, more than $11 billion had been legally wagered on sports games.
OddsSeeker researched 22 states where online gambling is legal using internet news reports and government resources. For this list, three forms of online gambling have been considered: online casinos, online poker and online sports betting.