California may not have legalized online or sports betting, but it still ranks among the top 10 most gambling-addicted states in the US, according to WalletHub. The study analyzed 20 key metrics, including the presence of illegal gambling operations, lottery sales per capita, and the share of adults with gambling disorders. California ranked 11th overall, placing in the top 10 for Gambling Problem and Treatment Rank (7th) and Gambling-Related Arrests Per Capita (8th).