David Boreanaz was born on May 16, 1969 in Buffalo, New York where his father, Dave Roberts (né Boreanaz), was working as a weather forecaster and children's show host for ABC affiliate WKBW-TV, and his mother, Patti Boreanaz, was a travel agent. He is of Italian descent on his father's side (the surname Boreanaz is of Northern Italian origin). His mother is of half Slovak and half Irish, German, French, and Swiss descent.
When Boreanaz was nine years old, the family moved to the Philadelphia, Pennsylvania area after his father took a job at WPVI-TV, the ABC affiliate in Philadelphia. Boreanaz attended Rosemont School of the Holy Child in his early years and then high school at Malvern Preparatory School in Malvern, Pennsylvania, and went to college at Ithaca College in Ithaca, New York. After graduating, Boreanaz moved to Hollywood, California to pursue an acting career.
Boreanaz lives in Los Angeles, California. He was married to Ingrid Quinn from June 7, 1997 to October 1999. He has been married to actress and Playmate Jaime Bergman since November 24, 2001. David and Jaime have a son, Jaden (Jaden Rayne Boreanaz, born on May 1, 2002), and a daughter, Bella (born Bardot Vita Boreanaz on August 31, 2009, her name was later changed to Bella Vita Bardot Boreanaz).