Illinois Social Security Numbers
Social Security Numbers issued to Illinois fall between 318-##-#### and 361-##-####.
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About this Data
SSNs issued before June 25, 2011 are linked to where the number was issued which is often the same as where the cardholder was born. After 2011, SSN issuance was randomized. Not every SSN in the range above is necessarily valid. Learn More >
Illinois SSNs by Year
Within the 318-##-#### to 361-##-#### group, the 4th and 5th digits indicate when a number was issued.
| Social Security Number | First Year Issued | Last Year Issued | Estimated Age of Cardholder | Valid SSN? |
|---|---|---|---|---|
| 361-92-#### | 1997 | 1998 | 27 to 28 yrs | Valid |
| 361-94-#### | 1999 | unknown | 18 to 26 yrs | Valid |
| 361-96-#### | 2000 | unknown | 17 to 25 yrs | Valid |
| 361-98-#### | 2002 | 2004 | 21 to 23 yrs | Valid |
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