Mark Zuckerberg
Palo Alto, California
Mark Elliot Zuckerberg was born on May 14, 1984 in Dobbs Ferry, New York, into a comfortable, well-educated family. His father, Edward Zuckerberg, ran a dental practice attached to the family's home. His mother, Karen, worked as a psychiatrist before the birth of the couple's four children—Mark, Randi, Donna and Arielle.