Sierra Nicole McCormick was born on October 28, 1997 (Sierra McCormick age: 22) in Asheville, North Carolina. McCormick was raised in Palm Springs, California and has a sister, Kayla.


McCormick’s first television appearance was on the series ‘Til Death, in which she had a small, uncredited cameo. In the same year, she was chosen to be on the second season of Are You Smarter Than a 5th Grader? after attending several castings and auditions.


McCormick told uInterview that being on the game show was the first acting job that gave her “a taste of what being on set is like.” She described the audition process and the time spent filming as an experience that “loosened me up in front of camera and got me accustomed to being in front of camera, and being myself in front of camera, and being real in front of camera.”

In 2010, McCormick played Susan Kushner in the family film Ramona and Beezus alongside Joey King and Selena Gomez. Shortly after, McCormick was cast as child prodigy Olive Doyle on the Disney TV series A.N.T. Farm, which propelled her to mainstream attention. McCormick starred alongside China Anne McClain, who she had previously worked with on the film Jack and Janet Save the Planet in 2008. McCormick played the role on A.N.T. Farm from 2011 to 2014. She also appeared in another Disney show, Jessie, during the same time frame.

In 2011, McCormick played Alice in Disney’s movie Spooky Buddies, for which she won Young Artist Awards Best Performance in a DVD Film – Young Ensemble Cast for her role.

In 2019, McCormick played Fay Crocker in the science fiction film The Vast of Night alongside Jake Horowitz. McCormick has received a special mention from the 27th Hamptons International Film Festival Jury Awards for her role in the film.


McCormick spoke to uInterview in an exclusive interview on her 2019 film The Vast of Night. She revealed that her favorite scenes to film were the ones she spent working with the switchboard as well as the scenes with costar Horowitz in the car, citing their moments of banter as the most fun to film.

McCormick revealed that she and Horowitz spent a large amount of time rehearsing in order to establish their chemistry. “Most of [our chemistry] is in no small part to Andrew [Patterson, director] because he had us rehearse extensively before we ever set foot in front of camera,” McCormick said.

Her favorite scene to watch? “Gail [Cronauer]/Mabel’s monologue. Getting to sit there on the day and witness that… she’s an incredible actress. I learned a lot while just getting to sit in on that scene and listen to her.”

So what did McCormick think of extraterrestrial life, the subject of the film? “I definitely always believed in extraterrestrial life … unexplained events and occurrences, that’s like, my s—,” McCormick said with a laugh. “It was definitely one of little Sierra’s goals to be in a movie that’s about some creepy, unexplained occurrence or disappearance and I think I lived up to it. I think little Sierra’s really happy.”


McCormick resides in Los Angeles. McCormick has been outspoken about her support for the Black Lives Matter movement.

In an exclusive chat with uInterview, McCormick described herself as an extrovert. In the midst of the coronavirus pandemic and the subsequent lockdown of cities around the world, McCormick jokingly said, “I’m an extrovert, so I’m not doing great.” McCormick has turned to watching movies and practicing yoga during her extended time at home.


How old is Sierra McCormick? As of 2020, McCormick is 22 years old.

What is Sierra McCormick’s Instagram? McCormick’s Instagram handle is @sierramccormick.

Who is Sierra McCormick dating? McCormick is currently single.

Who did Sierra McCormick play on A.N.T. Farm? McCormick played Olive Doyle on A.N.T. Farm from 2011 to 201.

What is Sierra McCormick’s net worth? According to Celebrity Net Worth, McCormick has a net worth of $1 million.


Year Title Role
2007 ‘Til Death (TV Series)

–       Summer of Love

Kid (uncredited)
2008 Boston Legal (TV Series)

–       Dances with Wolves

2008 Supernatural (TV Series)

–       Yellow Fever

–       No Rest for the Wicked

2009 Criminal Minds (TV Series)

–       Bloodline

Lynn Robillard
2009 Hannah Montana (TV Series)

–       Welcome to the Bungle

2009 Land of the Lost Tar Pits Kid
2009 Monk (TV Series)

–       Mr. Monk and the Dog

Anne Marie
2007-2009 Curb Your Enthusiasm (TV Series)

–       The Table Read

–       The Reunion

–       The Bat Mitzvah

2009 The Dog Who Saved Christmas Kara Bannister
2009 Jack and Janet Save the Planet Molly
2010 Medium (TV Series)

–       There Will Be Blood… Type A

Adolescent Allison
2010 CSI: Crime Scene Investigation (TV Series)

–       Irradiator

Gracie Layman
2010 Romantically Challenged (TV Series) Scout Thomas
2010 Ramona and Beezus Susan
2010 A Nanny for Christmas Jackie Ryland
2011 Spooky Buddies Alice
2013 The Breakdown Little Girl
2011-2014 A.N.T. Farm (TV Series) (62 episodes) Olive Doyle
2011-2014 Jessie (TV Series)

–       Creepy Connie 3: The Creepening

–       Creepy Connie’s Curtain Call

–       Creepy Connie Comes a Callin’

Connie Thompson
2015 Some Kind of Hate Moira
2016 Twisted Sisters Sarah
2018 The Christmas Trap Kara Gentry
2018 The Honor List Charlotte
2018 The Neighborhood Watch Allie
2018 Pretty Little Stalker Bridget
2019 The Vast of Night Fay Crocker
2019 Who Stole My Daughter? Katie Sullivan
2019 All Good Things Bailey
2019 VFW Lizard
2020 Exploited (post-production) Chloe


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