The age of the basketball players, need to be at least 19 years to be allowed to play. However, the average age of the NBA players has decreased since this minimum age was set. Now the average is around the early 20s. The youngest NBA player is Bynum, who is 18 years and 6 days old.
There is a range of ages across the different teams. However, there is a tendency towards younger players as young talent keeps coming into the games. However, there are still senior players in the game until they pass off their game to the young ones.