But New Jersey sports betting sites will see this number drop moving forward. This number represents 19.9% of the US market share. Regardless, every state with legal sports betting has a story to tell based on their handle, revenue, or tax contributions.Ģ9,096,843,485 – The amount of money bet in New Jersey. WASHINGTON – Nationwide, sports betting has broken many standards. Nevada sports bettors hold the best win rate (5.65%), while Montana sportsbooks see bettors lose at the US’s worst rate (13.5%).Pennsylvania, Illinois, New York and New Jersey have contributed over $1 billion to local governments from sports betting taxes.