Roulette Odds
In the US, a roulette wheel has 38 numbered slots: numbers 1 to 36, a zero, and a double zero. The betting layout consists of every individual number as well as a host of "outside" or combinations of numbers.
After the players make their bets the dealer spins the wheel and a ball and after several seconds the ball will land in one of the numbered slots.
The following table displays the available bets, the win (on a "for one" basis), and the probability of winning under US rules.
All casinos in the US follow these rules except those in Atlantic City. The house edge on all bets is 1/19, or 5.26%, except for one bet - the 0-00-1-2-3 combination, which carries a house edge of 7.89%.
| Bet | Pays | Probability Win | House Edge |
|---|---|---|---|
| Black | 1 | 47.37% | 5.26% |
| Odd | 1 | 47.37% | 5.26% |
| Even | 1 | 47.37% | 5.26% |
| 1 to 18 | 1 | 47.37% | 5.26% |
| 19 to 36 | 1 | 47.37% | 5.26% |
| 1 to 12 | 2 | 31.58% | 5.26% |
| 13 to 24 | 2 | 31.58% | 5.26% |
| 25 to 36 | 2 | 31.58% | 5.26% |
| Six number combination | 5 | 15.79% | 5.26% |
| 0,00,1,2,3 combination | 6 | 13.16% | 7.89% |
| Four number combination | 8 | 10.53% | 5.26% |
| Three number combination | 11 | 7.89% | 5.26% |
| Two number combination | 17 | 5.26% | 5.26% |
| Any one number | 35 | 2.63% | 5.26% |
Single Zero Rules
Most high-end casinos in the United States have single-zero wheels. This includes Las Vegas, Atlantic City, the Grand in Tunica, and Foxwoods in Connecticut. The limits on the single zero wheels are usually higher than the double zero wheels. A noteworthy exception is the Nevada Palace in Las Vegas, which has a single zero wheel with a 25-cent minimum. The house edge on an American single-zero wheel is 1/37, or 2.70%.