Parker Posey was born two months premature in Baltimore, Maryland, to Lynda (Patton) and Chris Posey. The family moved to Monroe, La. and then Laurel, Mississippi, where Chris became owner of Laurel's own Posey Chevrolet. Parker attended high school at R. H. Watkins High School in Laurel, and college at the prestigious SUNY Purchase. While at SUNY she roomed with Sherry Stringfield of TV's ER (1994).