Kemp was born in Athens, Georgia. His father, William L. Kemp II, came from a well-known and politically powerful family. Julian H. Cox, Kemp’s grandfather, served in the Georgia Legislature.
Before he ran for office, Kemp built homes and built land. After beating Doug Haines, a Democrat who was in office at the time, he was a Georgia State Senator from 2003 to 2007. In 2006, Kemp ran for the job of Georgia’s Secretary of Agriculture.
Kemp married Marty Argo on January 8, 1994. Marty is the daughter of Bob Argo, who served in the Georgia House of Representatives for a long time. They have three daughters together.
Kemp’s net worth went from $5.2 million in 2018 to $8.6 million, according to his most recent financial report.