For many people born in the nineteenth century before formal birth registration
was required, Social Security records can provide valuable vital facts
about birthplace and date, death date, or parents' names. They can also
give you clues to where a person lived or even worked at a given time,
where they resided when they first applied for their Social Security card,
where they last resided, and the residential area of the person who received
benefits upon their death.
History of Social Security
Let's begin with a short history lesson about Social Security. You'll
need to remember a few important dates as you seek clues to your ancestors
in the Social Security records.
President Franklin D. Roosevelt signed the Social Security Act into law
on August 14, 1935. By June 30, 1937, the Social Security Board had established
field offices that assigned Social Security numbers until 1972. Since
1972, all Social Security numbers have been issued centrally from Baltimore.
Do you know where your grandfather worked when he first applied for a
Social Security card? Up until 1947, Social Security card applications
included the applicant's employer and the employer's address.
Someone you are seeking may not have applied for a Social Security number
until it was needed for Medicare benefits, beginning in 1965 for those
age 65 or older.
What about military records? In 1967, the Department of Defense began
using Social Security numbers instead of military service numbers to identify
Armed Forces personnel. Be sure to check discharge papers lying around
the house or recorded at the county courthouse to see if the service number
is actually a Social Security number.
Not just U.S. citizens receive Social Security numbers. In 1972 the law
required the Social Security Administration (SSA) to issue numbers to
any legally admitted alien upon entry, and to obtain evidence of age and
citizenship or alien status and identity.
Do you have a railroad worker in your family tree? Up until 1963, railroad
employees were assigned Social Security numbers in a series from 700-728.
Since 1989, an SSA program has enabled parents to automatically obtain
a Social Security number for a newborn infant when the birth is registered
with the state, a sure indicator of place of birth.
What's in a Number?
The first three digits of a Social Security number, known as the area
number, are assigned by geographical region. Visit the SSA's
web site for a list of area numbers and corresponding states. Prior
to 1972, cards were issued in local Social Security offices around the
country, and the area number represented the state in which the card was
issued. Since 1972, when the SSA began assigning numbers and issuing cards
centrally from Baltimore, the area number is assigned based on the zip
code in the mailing address provided on the application for the original
Social Security card. A word of warning: the applicant's mailing address
may not be the same as his or her place of residence. Therefore, the area
number does not necessarily represent the applicant's state of residence
either prior to 1972, or since. The area numbering scheme was developed
in 1936, before computers, to make it easier for the SSA to store the
applications in Baltimore files that were organized by regions and alphabetically.
Originally, it was intended for SSA internal use and convenience, and
was not intended for anything more. However, it's a good clue for the
Where Can I Find a Social Security Number?
A variety of documents may reveal a person's Social Security number.
- Look carefully at the death certificate if you have it.
- Military records since 1967 use the person's Social Security number
as an identifier.
- Check with the funeral home that handled arrangements they may
have a record of the deceased's Social Security number.
- A life insurance policy or death claim may list it.
- Some states use the Social Security number as a driver's license number.
- Look around the houseóif the deceased or their minor children received
any kind of Social Security benefits, you may have papers listing the
Social Security number in a filebox in your home.
- And there's always the Social Security Death Master File (SSDMF),
also known as the Social Security Death
The Social Security Death Index
Since 1962, the SSA has used an electronic system, or computer, to maintain
records of approximately 60 million deaths that have been reported to
them. This database is in tape format, which is not searchable by the
public. However, the U.S. Department of Commerce does sell these reels
of magnetic tape to genealogical services that reformat the information
on their own searchable computer databases or publish it on cd-roms. All
so-called Social Security Death Index information comes from the same
source the Social Security Administration's records. These include
Social Security number, last name and first name, date of death and date
of birth, zip code of last residence, and zip code of lump sum payment
As with any electronic data, problems exist in the original database,
and these errors flow through to all versions of the Social Security Death
Index. For example, the SSA database allows only twelve letters for last
name and nine letters for first name, with all other letters being truncated,
or left off. Also, data entry errors do occur. If you can't find someone
by first and last name and birth date, try searching by first name only
and as much other information as you can to narrow the search. Be sure
to visit Kathleen
Hinckley's Family Detective web site. She keeps a regularly-updated
list of errors that people find in the SSDI, and you can search for the
name you couldn't find in the SSDI.
In addition to data entry errors, be aware that the death date may contain
month and year only, especially before 1988. Another issue is that the
zip code information may lead you in the wrong direction. Zip codes were
not used until 1963, and the location assigned to a zip code is based
on U.S. Postal Service assignment of localities to a given zip code. This
may not be the town where the person actually lived, nor where final benefits
were sent. For example, a zip code of 63017 results in two Missouri town
names-Chesterfield, and Town and Country.Do not be fooled into thinking
the zip code or locality of last residence is where the person died. They
may have last resided in Patterson, Missouri, but actually died in a hospital
in Memphis, Tennessee. In that case, you would never find a death certificate
in Missouri. Having told you all the pitfalls to watch out for, I will
say that you can still find many valuable clues in the SSDI.
Who's in the SSDI?
Let's start with who is not in the SSDI. Everyone who received a Social
Security number or paid withholding tax is not in the database. My grandmother,
who paid withholding taxes most of her life, looked forward to collecting
benefits upon retirement at age 60 in 1964. Unfortunately, she died at
age 59-1/2. She had a Social Security number, and she paid her fair share
of withholding, yet she is not in the SSDI. Why? Her death was not reported
to the Social Security Administration by anyone. She had not yet drawn
a Social Security check, so there was no need to notify the SSA of her
Everyone who received Social Security benefits is not in the database.
A young man died in 1953, leaving a pregnant wife. The child received
Social Security benefits based on her father's benefits until she was
eighteen years old. Yet no record of her father exists in the SSDI. Why?
Because his death was not reported to the Social Security Administration.
He was 26 years old when he died, so there was no reason to notify the
So who are all those people in the SSDI? They are persons who
- Had a Social Security number, and
- Whose deaths were reported to the Social Security Administration.
A survivor may have requested death benefits from the SSA. A family member
may have notified the SSA to stop benefits to the deceased. A funeral
home may have notified the SSA as a service to the family. Whether or
not the deceased ever received Social Security benefits, if someone notified
the SSA of their death, and they had a Social Security number, they probably
appear in the SSDI.
When does this index begin? The SSA began to use a computer database
in 1962. About 98 percent of the people in the SSDI died after 1962, although
a few deaths do date back as far as 1937.
Where Can I Look at the SSDI?
Almost any LDS Family History Center offers free on-site use of the FamilySearch
set of cd-roms, which include the Social Security Death Index. This version
offers one feature that others do not it reports foreign death
Several versions of the SSDI are available on the Internet. The SSDI
is incorporated into Genealogy.com's
Family Finder Index. Other versions are available at various genealogy
web sites. In addition, several software companies include the SSDI as
part of their deluxe programs, or offer it for sale separately.
Be selective as you use different versions of searchable SSDI databases.
Try all of them and decide for yourself which is the most flexible, offering
you the option to search by first name only, along with birth date, to
try to find those females whose married names you don't know. Use them
to find out what happened to your great uncle, you have no idea when he
died or where his family went. Search by his name and birth date, and
see if a record reveals a location of last residence or location where
his benefits were sent.
I Found Him! Now What?
When you find a person in the SSDI, you will glean a few facts that you
may not have known. Take it one step beyond these facts to learn more.
You know a birth date, and the state where the original Social Security
card was issued, or at least where it was mailed to the applicant. Look
for a birth certificate or census record in that state.
You have a death date, and location of last residence. Look
for an obituary in the local newspaper to determine a death place.
Then request a death certificate or contact the funeral home for any
records they might have.
You have the location where the person's lump sum distribution
was sent. Search an on-line telephone directory for the last name
of the person you think may have received the benefits, and contact
You have the Social Security number. Splurge! Send $7.00 for
the original application, as described below.
Request an SS-5
The SS-5, Application for Social Security Account Number, contains the
following information: Social Security number, full name (including women's
maiden names), address at time of application, employer and employer's
address (pre-1947 applications only), age at last birthday, date and place
of birth, parents' full names (including mother's maiden name), sex, color,
and whether the applicant had previously applied for Social Security or
Railroad Retirement. It also contains the application date and the applicant's
actual signature. Wouldn't you like to have this information about the
person you are researching?
Under the Freedom of Information Act (FOIA), SSA will fulfill requests
for applications of deceased persons for $7.00, if you provide the Social
Security number. If you do not know the number, the search fee is $16.50.
Be sure to include the person's Social Security number, full name (including
maiden name and name at death), sex, date and place of birth, date of
death, and parents' names. Provide proof of death, or state that the person
is listed in the SSA Death Master File. Include the following statement:
"Microprint required - Printout not sufficient." (Otherwise,
you may receive a computer-generated printout instead of a copy of the
Mail your request and payment to: Social Security Administration, Office
of Central Records Operations, 300 N. Green St., P.O. Box 33022, Baltimore,
Now you know who is really in the Social Security Death Index, and all
the facts that are available from that source. You've learned how to obtain
an individual's application for Social Security card, whether or not they
ever collected benefits. You've seen how these few vital facts can lead
you to other richer sources. So what are you waiting for? Start looking
for those nineteenth and twentieth-century ancestors online today.