SOCIAL SECURITY NUMBER ALLOCATIONS

Since 1973, social security numbers have been issued by our central office. 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 1973, social security numbers were assigned by our field offices. The number merely established that his/her card was issued by one of our offices in that State.

THIS DATA IS STRICTLY FOR INFORMATIONAL PURPOSES.

The chart below shows the first 3 digits of the social security numbers assigned throughout the United States and its possessions.

001-003New Hampshire      387-399Wisconsin      521-524
650-653
Colorado   
004-007Maine400-407Kentucky
008-009Vermont408-415
756-763*
Tennessee525-585
648
649*
New Mexico
010-034Massachusetts
035-039Rhode Island416-424Alabama
040-049Connecticut425-428
587
588*
752-755*
Mississippi526-527
600-601
Arizona
050-134New York
135-158New Jersey525-529
646-647
Utah
159-211Pennsylvania
212-220Maryland429-432
676-679*
Arkansas530
680*
Nevada
221-222Delaware
223-231
691-699*
Virginia
433-439
659-665*
Louisiana531-599Washington
232-236West Virginia540-544Oregon
232
237-246
681-690*
North Carolina440-448Oklahoma545-573
606-626
California
449-467
627-645
Texas
574Alaska
247-251
654-658
South Carolina468-477Minnesota575-576
750-751*
Hawaii
478-485Iowa577-579District of Columbia
252-260
667-675*
Georgia486-500Missouri580Virgin Islands
501-502North Dakota580-584
596-599
Puerto Rico
261-267
589-595
Florida503-504South Dakota      
505-508Nebraska586Guam
268-302Ohio509-515Kansas586American Samoa
303-317Indiana516-517Montana586Philippine Islands
318-361Illinois518-519Idaho700-728Railroad Board**
362-386Michigan620Wyoming

NOTE:   The same area, when shown more than once, means that certain numbers have been transferred from one State to another or that an area has been divided for use among certain geographic locations.

Any number beginning with 000 will NEVER be a valid SSN.  

The information in our records about an individual is confidential by law and cannot be disclosed except in certain very restricted cases permitted by regulations.

 * New areas allocated, but not yet issued

** 700-728 Issuance of these numbers to railroad employees was discontinued July 1, 1963


For more information, contact the Social Security Administration at (410) 965-5895 or (410) 965-1133.


Back Home