Claire "Ellie" Kemper (born May 2, 1980) is an American comedic actress and writer best known for her role as Erin Hannon in NBC 's The Office . Ellie Kemper [1] Photo from Princeton University in 2002 Born Elizabeth Claire Kemper May 2, 1980 (1980-05-02) (age 30) Kansas City, Missouri U.S. Occupation