There is a method to the assignment of Social Security numbers which can help a little bit in spotting frauds. The first three digits are determined by where you lived when you received your number; 596 to 599, for example, are issued to residents of Puerto Rico (yes, it’s part of the United States). The higher the number, the further west you lived at the time you received your number. There are no Social Security numbers starting with 900-999.
000 unused 387-399 WI 528-529 UT001-003 NH 400-407 KY 530
NV004-007 ME 408-415 TN 531-539 WA008-009 VT 416-424
AL 540-544 OR 010-034 MA 425-428 MS 545-573
CA 035-039 RI 429-432 AR 574 AK 040-049 CT 433-439
LA 575-576 HI 050-134 NY 440-448 OK 577-579
DC 135-158 NJ 449-467 TX 580
VI Virgin Islands 159-211 PA 468-477 MN 581-584
PR Puerto Rico212-220 MD 478-485 IA 585 NM 221-222 DE 486-500
MO 586 PI Pacific Islands* 223-231 VA 501-502
ND 587-588 MS 232-236 WV 503-504 SD 589-595
FL 237-246 NC 505-508 NE 596-599
PR Puerto Rico 247-251 SC 509-515 KS 600-601 AZ 252-260
GA 516-517 MT 602-626 CA 261-267
FL 518-519 ID *Guam, American Samoa, 268-302
OH 520 WY Northern Mariana Islands, 303-317
IN 521-524 CO Philippine Islands 318-361 IL 525
NM 362-386 MI 526-527 AZ 627-699
unassigned, for future use 700-728
Railroad workers through 1963, then discontinued 729-899 unassigned, for future use
900-999 not valid SSNs, but were used for program purposes when state aid to the aged, blind and disabled was converted to a federal program administered by SSA.
http://stopforeclosurefraud.com/2010/08/13/your-social-security-number-may-not-be-unique-to-you/
https://annualcreditreport.experian.com/AnnualCreditReport/cac/ReportSummary2.do
https://www.myidscore.com/
http://w2.eff.org/Privacy/ID_SSN_fingerprinting/ssn_structure.article
http://stevemorse.org/ssn/ssn.html
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