Elaine is the youngest of the group, being 27 years old when the 1989 premiere season began, and a year younger than her Emmy-winning actress Julia Louis-Dreyfus.
George Costanza follows up as the second-youngest Seinfeld character, with his surmised birthday putting him at 31 years old when the show starts.
This gets a bit confusing when little comments by George and Jerry make it seem like they’re actually a few years apart, with Jerry being older.