Pierce began his career as a Deputy Sheriff with the Fresno County Sheriff's Office in 1966.
He would go on to work a variety of assignments and work his way up the ranks, before ultimately being elected as Fresno County's 24th Sheriff in 1998.
Sheriff Pierce served two terms and retired from his law enforcement career in 2007, marking 40 years of public service.
Pierce is survived by his wife, five children and several grandchildren.
He passed away on Wednesday.
Pierce was 80 years old.