Emily Jean Stone was born on November 6, 1988, in Scottsdale, Arizona, to Krista Jean Stone (née Yeager), a homemaker, and Jeffrey Charles Stone, the founder and CEO of a general-contracting company. Stone lived on the grounds of the Camelback Inn resort from ages 12 to 15. She has a younger brother, Spencer. Her paternal grandfather, Conrad Ostberg Sten, was from a Swedish family that anglicized their surname to "Stone" when they immigrated to the United States through Ellis Island. She also has German, English, Scottish, and Irish ancestry.