Daughter of Phyllis Diller and Sherwood Anderson Diller. Stephanie Diller is deceased (June 2002). Sister of Peter Diller (also deceased), Sally Diller, Perry Diller, and Sue Diller.
Her third sibling (born 1945), a male, lived for only two weeks in an incubator, and was given her grandfather's name of Perry, a name that would later be given to her youngest sibling.