What is the Social Security Death Index and what kind of information can I find in it? The Social Security Death Index is an index of Social Security Death Benefit records. These records document how much the government has paid to an individual (spouse, child, etc) as a result of a relative's death. An individual will appear in the Social Security Death Index if he or she died between 1962 and 1988. In addition, the individual must have applied for Social Security during their lifetime, and someone must have applied for their Social Security death benefits at the time of death. You can find the following information in the Social Security Death Index: the deceased's surname and given name, Social Security number, birth date, death date, state and county code of last residence, zip code of residence, and zip code to which the Social Security Administration sent the death benefits.