The chances of winning a Green Card vary from year to year due to the number of participants and the legal requirements. Each world region receives a certain number of Green Cards. The average chance of winning a Green Card with The American Dream is about 1:25 to 1:75, depending on the region and year (for Europeans recently around 1:45).
It is essential to beware of the fact that the Green Card Lottery only takes place once a year. That is why it is vital to take advantage of this chance when you have it! Married couples can submit their own separate applications and double their chances of winning.