Joey King was born in Las Vegas, Nevada. Her older sisters Haley King and Kelli King are also actresses.
King's first commercial was a national spot for Life cereal. Since then, she has completed over 104 commercials including national campaigns for Eggo and Walmart. She then appeared in her first film, Grace.
King has been featured in Reign Over Me with Adam Sandler, Quarantine, and has lent her voice to the animated films Horton Hears A Who! (2008) and Ice Age: Dawn of the Dinosaurs (2009). In the year 2010, she guest starred in the series Ghost Whisperer. She was also featured in The Suite Life of Zack & Cody as Emily in two episodes.
She has appeared in several television shows and movies of the week, CSI, Entourage, Ghost Whisperer, Medium, The Suite Life and Malcolm in the Middle, to name a few. She has completed three pilots, one directed by J.J. Abrams.
Her first movie "Grace", was shot when she was six years old. On the first day of filming she had to pretend to almost drown in the cold ocean.
King has worked with Adam Sandler on the feature Reign Over Me, and said she loved learning to do stunts for the character Brianna, on Quarantine. She voiced the yellow fur ball Katie, for the animated feature Horton Hears A Who, and Beaver, for Ice Age 3-D.
King's most recent projects included Battle: Los Angeles, where she played a civilian named Kirsten, who was battling for her life with the help of many courageous Marines. In the feature Ramona and Beezus, based on the book series by Beverly Cleary, King portrays Ramona Quimby, whose character always seems to be in some sort of mischief or manages to totally embarrass her big sister Beezus, played by Selena Gomez.