Social Security Numbers (SSN) Reference Guide
About Social Security Numbers
In the United States, a Social Security number (commonly known as SSN) is a number issued to U.S. citizens, permanent residents, and people that are temporarily working in the country. The number is issued to an individual by the Social Security Administration, an agency of the federal government. Its primary purpose is tracking working individuals for taxation purposes and to track Social Security benefits. Since it was initially introduced, the SSN has become the primary national identification number, even though it was not originally indended to be used as a form of identification.
There is no law directly requiring a natural born United States citizen to apply for a Social Security number, or SSN, to live or work in the United States. Although some people still live without a Social Security number, it is becoming ever increasingly difficult to engage in normal acts of commerce or banking activities without providing an SSN. Such prohibitions against persons that refuse to enter into what amounts to a voluntary government program, raises a variety of constitutional concerns.
Since 1972, social security numbers have been issued by the central office of the Social Security Administration. The first three (3) digits of a person’s social security number are determined by the ZIP Code of the mailing address shown on the application for a social security number.
Prior to 1972, social security numbers were assigned by Social Security Administration field offices. The number merely established that his/her card was issued by one of the Social Security Administration offices in that State.
Social Security Number – Area Group Serial
The Social Security number consists of nine (9) digits – 1 2 3 – 4 5 – 6 7 8 9. The first three digits of a social security number denote the area (or State) where the application for an original Social Security number was filed.
Within each area, the group number (middle two (2) digits) range from 01 to 99 but are not assigned in consecutive order. For administrative reasons, group numbers issued first consist of the ODD numbers from 01 through 09 and then EVEN numbers from 10 through 98, within each area number allocated to a State. After all numbers in group 98 of a particular area have been issued, the EVEN Groups 02 through 08 are used, followed by ODD Groups 11 through 99.
Within each group, the serial numbers (last four (4) digits) run consecutively from 0001 through 9999.
This chart below shows how Group numbers are assigned:
- ODD – 01, 03, 05, 07, 09——EVEN – 10 to 98<
- EVEN – 02, 04, 06, 08——ODD – 11 to 99
List of Social Security Numbers for Each State
Follow is a list of social security numbers for each state. The listing is organized in ascending order based on the SSN prefix, with the corresponding issuing state listed.
001-003 = New Hampshire
004-007 = Maine
008-009 = Vermont
010-034 = Massachusetts
035-039 = Rhode Island
040-049 = Connecticut
050-134 = New York
135-158 = New Jersey
159-211 = Pennsylvania
212-220 = Maryland
211-222 = Delaware
223-231 = Virginia
232 = North Carolina
232 = West Virginia
233-236 = West Virginia
478-485 = Iowa
486-500 = Missouri
501-502 = North Dakota
503-504 = South Dakota
505-508 = Nebraska
509-515 = Kansas
516-517 = Montana
518-519 = Idaho
520 = Wyoming
521-524 = Colorado
525 = New Mexico
526 = Arizona
526 = New Mexico
527 = Arizona
528-529 = Utah
237-246 = North Carolina
530 = Nevada
247-251 = South Carolina
Florida (Also 589-595)
District of Columbia
Guam & American Samoa
586 = All Other Pacific Territories
425-428 = Mississippi
587-588 = Mississippi
429-432 = Arkansas
589-595 = Florida (also 261-267)
433-439 = Louisiana
600-601 = Arizona (designated)
602-626 = California (designated)
449-467 = Texas
700-728 = Railroad Retirement
468-477 = Minnesota
729-999 = Currently not in use
- Find your local Social Security Office – If you live in the United States and you want information and directions to the Social Security office that serves your area, just enter your U.S. Postal Service five-digit ZIP code below and select Locate. You’ll get information about your local Social Security office and other agencies in your area that may be able to help you.
- How Social Security Numbers work
- Social Security Administration Homepage Provides employers with information on the administration of social security.
- Social Security Number Validator
- SSN Background Checks – Search using social security numbers
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