Real age of Trey Parker in Christmas in South Park
In the movie Christmas in South Park, Trey Parker was:
30 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie Christmas in South Park was released:
January 1, 2000
And the day in which Trey Parker was born:October 19, 1969
Since movies usually don't take more than one year to be released since the beginning of the filming process, Trey Parker may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.