The first three digits of a
person's Social Security number were determined by the state where the person
applied prior to 1973.
Since then the first three digits have been assigned
based on the ZIP Code of the mailing address on the Social Security number
application. These numbers can help you to determine where your ancestor may
have possibly been living when his/her SSN was issued (see exceptions below).
These numbers can also be helpful in determining which listings in the SSDI may
belong to your ancestor.
The chart below shows the first 3 digits of the social security numbers
assigned throughout the United States and its possessions.
SOCIAL
SECURITY NUMBER STATE CODES
001-003
New
Hampshire (NH)
004-007
Maine
(ME)
008-009
Vermont (VT)
010-034
Massachusetts (MA)
035-039
Rhode Island (RI)
040-049
Connecticut (CT)
050-134
New York (NY)
135-148
New Jersey (NJ)
159-211
Pennsylvania (PA)
212-220
Maryland (MD)
223-231
Virginia (VA)
232*
West Virginia (WV) North Carolina (NC)
233-236
West Virginia (WV)
237-246
North Carolina (NC)
247-251
South Carolina (SC)
252-260
Georgia (GA)
261-267
Florida (FL)
268-302
Ohio (OH)
303-317
Indiana (IN)
318-361
Illinois (IL)
362-386
Michigan (MI)
387-399
Wisconsin (WI)
400-407
Kentucky (KY)
408-415
Tennessee (TN)
416-424
Alabama (AL)
425-428
Mississippi (MS)
429-432
Arkansas (AR)
433-439
Louisiana (LA)
440-448
Oklahoma (OK)
449-467
Texas (TX)
468-477
Minnesota (MN)
478-485
Iowa (IA)
486-500
Missouri (MO)
501-502
North Dakota (ND)
503-504
South Dakota (SD)
505-508
Nebraska (NB)
509-515
Kansas (KS)
516-517
Montana (MT)
518-519
Idaho (ID)
520
Wyoming (WY)
521-524
Colorado (CO)
525
New Mexico (NM)
526-527
Arizona (AZ)
528-529
Utah (UT)
530
Nevada (NV)
531-539
Washington (WA)
540-544
Oregon (OR)
545-573
California (CA)
574
Alaska (AK)
575-576
Hawaii (HI)
577-579
District of Columbia (DC)
580*
Virgin Islands, Puerto Rico (PR)
581-584
Puerto Rico (PR)
585
New Mexico (NM)
586
Guam, American Somoa, Philippine Islands
587
Mississippi (MS)
589-595
Florida (FL)
596-599
Puerto
Rico (PR)
600-601
Arizona (AZ)
602-626
California (CA)
627-645
Texas (TX)
646-647
Utah (UT)
648-649
New Mexico (NM)
654-658
South Carolina (SC)
667-675
Georgia (GA)
680
Nevada (NV)
700-728
RR
Retirement Board
(All States - until July, 1963)
764-765
Arizona (AZ)
* The same number, when shown with more than one area, 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.
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