What is the Social Security Death Index?

What the index is

The Social Security Death Index, often shortened to SSDI, is a list of people whose deaths were reported to the Social Security Administration. It comes from a larger government file called the Death Master File. The public index is the version of that file that genealogy websites and researchers have been able to use.

The Social Security Administration keeps these records so it can stop benefit payments and prevent fraud. It was never meant to be a complete list of every death in the country. Over time, though, family historians, lenders, estate teams and others came to rely on it as one of the few national sources of death information.

Most entries are for deaths from the 1960s onward, when Social Security records were moved onto computers. Some earlier deaths appear, but coverage before then is thin.

What an entry shows

An SSDI entry is brief. It is a record, not a story, so it will not tell you about the person’s family, cause of death or funeral. A typical entry may include:

• The person’s first and last name, sometimes with a middle initial.
• Date of birth.
• Date of death, which for older entries may show only the month and year.
• Social Security number.
• The state where the number was issued.
• The ZIP code of the last known residence, and sometimes where a final benefit was sent.

The last residence ZIP code is often the most useful clue. It can point you to the town where the person lived, and from there to the local funeral homes, newspapers and cemeteries that may hold more details.

Why it is less complete than it used to be

Two changes reduced what the public can see. In 2011, the Social Security Administration stopped including many deaths reported by the states in the public version of the file, because of limits on how that state data could be shared. After that, far fewer new deaths appeared in the public index.

Then a federal law passed in 2013 limited access to death information for three years after a death. Only people and organizations certified for a legitimate purpose, such as preventing fraud, can see those recent records through a limited access program. Everyone else has to wait until the three years have passed.

Because of these changes, many copies of the SSDI on genealogy websites are no longer updated often, and some stopped growing years ago. A missing entry does not mean a person is alive.

Who may not be in it

Even for older deaths, the index has gaps. It lists deaths that were reported to Social Security, so people are more likely to appear if they were receiving benefits or if a family member or funeral home reported the death.

• People who never had a Social Security number may not be listed.
• Children and young adults who were not receiving benefits are often missing.
• Deaths reported only to a state, especially after 2011, may not appear in public copies.
• Deaths from the last three years are not in the public index at all.

Entries can also contain errors, such as a misspelled name or a wrong date. It is wise to confirm what you find with a second source, like an obituary or a state death record.

Where to search it

The Social Security Administration does not offer a simple public search page for the index. Instead, copies are hosted by genealogy websites. FamilySearch offers a free searchable version, and several subscription family history sites include it as well.

When you search, start with the last name and an approximate birth year, then narrow down with a state or ZIP code. Try spelling variations and first initials, since older records often shortened names. If you have a Social Security number from old paperwork, searching by that number is the most precise option.

Treat each site’s copy as a snapshot. Two sites may show slightly different results depending on when they last updated their data. For state level records and other official sources, see how to find death records online.

Getting more detail from an entry

If you find the right person, the SSDI entry can open other doors. With a date of death and a last residence, you can look for an obituary in that area, contact the local funeral homes, or order a death certificate from the state where the death happened. Our guide on how to get a copy of a death certificate explains that step.

Family historians can also request a copy of the person’s original application for a Social Security number from the Social Security Administration. That form was filled in by the person, often when they were young, and may list their parents’ names and place of birth. Rules and fees for these requests are set by the agency, so check its website before you apply.

What to use for recent deaths instead

Since recent deaths are held back from the public index, the SSDI is not the right tool if you are trying to learn whether someone died this month or this year. Funeral home websites, newspaper notices and memorial sites are much faster, and how to check if someone died recently walks through them.

If you need to know about a death as soon as it becomes public, an obituary monitoring service can help. The Passings checks funeral homes, newspapers and memorial sites every day for the names you add and emails you when a likely match appears, so you are not waiting years for an index to catch up.