The US Government announces the results of each year's Green Card Lottery approximately 6 months after the application deadline. In recent years, the announcement has usually occurred in the month of May.
USA Green Card notifies all DV Lottery applicants by email when their results are available. All applicants are notified, regardless of whether they were selected or not.
Applicants can also check their results by accessing their personal account with USA Green Card, or by using their official confirmation number on the US State Department website. This confirmation number is provided to all applicants after their DV Lottery applications are officially submitted to the DV Program, usually in the October-November timeframe.