The likely cause of the fire was sparklers on champagne bottles being carried too close to the ceiling, a preliminary investigation of how the fire began found.
Switzerland’s President Guy Parmelin called it “one of the worst tragedies” experienced by the country.
Further details about the identified victims, including names, have not been released.
Among the dead and missing are many teenagers. Le Constellation was a venue known to be popular with a younger crowd in the ski resort town, where the drinking age is 16.
On Friday, police said 113 of the injured have been identified, and include 71 Swiss, 14 French and 11 Italian citizens.
A teenage golfer from Italy was the first death to be named, though Swiss and Italian officials have so far declined to confirm his death.
A helpline has been set up for concerned families: +41 848 112 117