Most roulette wheels in the United States have both a zero and a double zero. These double zero roulette games have a house edge on every bet of 1/19, or 5.26%, except the 0-00-1-2-3 combination which has a house edge of 3/38 or 7.89%.

A few places offer single zero roulette in which the edge on every bet is 1/37, or 2.70%. The list below shows some places that I have seen or heard have single zero roulette, although keeping it up to date is not a priority of mine. These single zero wheels usually have a high minimum.

• The Tropicana (Las Vegas)

• The Monte Carlo (Las Vegas)

• The Stratosphere (Las Vegas)

• Mandalay Bay (Las Vegas)

• Grand Casino (Tunica)

Atlantic City Rules

Atlantic City roulette uses a double zero wheel but follows the European imprisonment rule (see below) on even money bets. This lowers the house edge on the red, black, odd, even, 1 to 18, and 19 to 36 bets to 1/38, or 2.63%. At the Claridge, and possibly other casinos, even money bets only lose half on a single or double zero, which amounts to the same house edge.

European Rules

There are two differences between United States rules and European rules. The first is that in Europe there is only one zero. The second is called the "imprisonment" rule which states that if the ball lands in zero all even money bets are imprisoned. If on the next spin the bet wins the wager is returned. If the next spin is another zero then half the bet is returned. If the bet otherwise loses on the next spin then the house collects the full bet. The house edge is 1/74, or 1.35%, on the even money bets and 1/37, or 2.70%, on all others.