Social Security Number (SSN) Meaning Explained

Social Security Number (SSN) Meaning Explained:-

The Social Security Number (SSN) information isn’t really a secret. It just isn’t very well known. By using the first three numbers of anyone’s SSN, you can often tell in which State they were born, or at the least, one of the States where they once lived. Try it!

Social Security Number (SSN) Meaning Explained - 01

How to Evaluate a Social Security Number:-

Here we have told how to decipher Social Security Number (SSN). We have explained how to evaluate and calculate Social Security Number (SSN). According to the Social Security Administration, your nine-digit Social Security Number (SSN) is divided into three parts:

1. The first three digits of your SSN are known as the “area number”. Until June 25, 2011, this was generally the State or territory where your SSN was assigned. After that, the Social Security Number (SSN) numbers were randomly assigned.

2. The second two numbers in your Social Security Number (SSN) are known as the “group numbers”. These “group numbers” actually do not have any geographical or data significance.

3. The third set of four numbers in your Social Security Number (SSN) is simply the numerical sequence of digits 0001 to 9999 issued within each group.

In this way, if you know the meaning of Social Security Number (SSN) you can tell a lot about the person with his Social Security Number (SSN). Just like if you know the first three numbers of anyone’s Social Security Number (SSN), you can often tell in which State they were born, or at the least, one of the States where they once lived.

Social Security “Area Code” Number Chart

The first three digits of a Social Security Number correspond to locations as follows:
SSN State SSN State or Territory
001-003 New Hampshire 449-467
004-007 Maine 468-477 Minnesota
008-009 Vermont 478-485 Iowa
010-034 Massachusetts 486-500 Missouri
035-039 Rhode Island 501-502 North Dakota
040-049 Connecticut 503-504 South Dakota
050-134 New York 505-508 Nebraska
135-158 New Jersey 509-515 Kansas
159-211 Pennsylvania 516-517 Montana
212-220 Maryland 518-519 Idaho
221-222 Delaware 520 Wyoming
Virginia 521-524
232-236 West Virginia 525, 585
New Mexico
North Carolina 526-527
South Carolina 528-529
Georgia 530, 680 Nevada
Florida 531-539 Washington
268-302 Ohio 540-544 Oregon
303-317 Indiana 545-573
318-361 Illinois 574 Alaska
362-386 Michigan 575-576
387-399 Wisconsin 577-579 District of Columbia
400-407 Kentucky 580 Virgin Islands
Tennessee 580-584
Puerto Rico
416-424 Alabama 586 Guam
Mississippi 586 American Samoa
Arkansas 586 Philippine Islands
Louisiana 700-728 Railroad Board*
440-448 Oklahoma 729-733 Enumeration at Entry
237-246, 587-665, 667-679,
681-699, 750-772
Officially: Not Issued
734-749, 773-899 Unknown
000, 666, 900-999 Never valid numbers

Important Notes to evaluate and decipher Social Security Number (SSN):

  1. * = 700-728 issuance of these numbers to railroad employees was discontinued July 1, 1963.
  2. If the same area number appears above more than once in any Social Security Number (SSN), it is because certain numbers were transferred from one State to another or that the area number was divided for use amongst certain geographical locations.
  3. Any number beginning with “000”, “666”, “900-999”, has a middle “00”, or ends in “0000” will never be a valid Social Security Number (SSN).
  4. Originally, the first three digits were assigned by the geographical region in which the person was residing at the time the Social Security Number (SSN) was assigned. “Generally, numbers were assigned beginning in the northeast and moved westward. So people on the east coast had the lowest numbers and those on the west coast had the highest numbers”.
  5. Since 1972/1973, when SSA started assigning Social Security Numbers ie. SSNs and issuing cards centrally from Baltimore, the Area Number assigned has been based on the ZIP code in the mailing address provided on the application for the original Social Security card. The applicant’s mailing address does not have to be the same as their place of birth or residence. Prior to 1972/1973, social security numbers were assigned by field offices. Therefore, the Area Number does not necessarily represent the State of residence of the applicant, either prior to 1972/1973 or since.
  6. People born in the United States since 1987 may have had their Social Security Number (SSN) applied for them by the hospital at birth. This policy varies from State to State.
  7. Effective since June 25, 2011, the SSA adopted a new randomized assignment methodology, called “SSN Randomization”. This was done in an effort to extend the longevity of the nine-digit Social Security Number (SSN) nationwide as well as for security purpose since randomization makes the newly assigned SSN’s more difficult to reconstruct using public information. Unused area numbers previously assigned to states, as well as previously unassigned area numbers, will now be available in the all-new Social Security Number Randomization or SSN randomization system.
  8. Social Security Number (SSN) in red were originally assigned to these states but were subsequently unassigned come June 2011 and used in the new randomized assignment. Numbers in these “officially” unissued series may still have been issued for applicants in these states prior to randomization.
  9. Social Security Number (SSN) is never reassigned after someone dies. Despite issuing over 450 million SSN’s since 1936, and assigning about 5.5 million new numbers a year, they can still issue new numbers for several generations.

Source: All data provided here on this webpage is current as of June 1, 2014.


  1. Information on this webpage is from sources believed to be reliable but cannot be guaranteed. The information presented is solely intended to assist site visitors in better understanding Social Security Numbers.
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