How old was Casey Affleck in Good Will Hunting?

The age of a celebrity during a film’s production often sparks interest among fans. That detail can add a new layer of appreciation to their performance. We’re about to uncover that piece of the puzzle.

The age of Casey Affleck while starring in Good Will Hunting was:

21 years old

That was the real age of the celebrity according to our calculation.

We calculated the age by referencing the first day of the year Good Will Hunting was launched:

January 1, 1997

And the birth date of Casey Affleck:

August 12, 1975

Because movies often premiere within a year of starting production, Casey Affleck might have been either one year younger or older while filming some scenes.