Illinois Social Security Numbers

Social Security Numbers issued to Illinois fall between 318-##-#### and 361-##-####.

Use the SSN Search Tool to check individual Social Security Numbers.

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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?
349-88-####	1993	unknown	24 to 32 yrs	Valid
349-90-####	1995	unknown	22 to 30 yrs	Valid
349-92-####	1996	1998	27 to 29 yrs	Valid
349-94-####	1998	unknown	19 to 27 yrs	Valid
349-96-####	2000	unknown	17 to 25 yrs	Valid
349-98-####	2001	2002	23 to 24 yrs	Valid
350-01-####	1936	1950	87 to 105 yrs	Valid
350-02-####	2003	2005	20 to 22 yrs	Valid
350-03-####	1936	1950	87 to 105 yrs	Valid
350-04-####	2005	2007	18 to 20 yrs	Valid
350-05-####	1936	1950	87 to 105 yrs	Valid
350-06-####	2007	2009	16 to 18 yrs	Valid
350-07-####	1936	1950	87 to 105 yrs	Valid
350-08-####	2009	2011	14 to 16 yrs	Valid
350-09-####	1936	1950	87 to 105 yrs	Valid
350-10-####	1936	1950	87 to 105 yrs	Valid
350-12-####	1936	1950	87 to 105 yrs	Valid
350-14-####	1936	1950	87 to 105 yrs	Valid
350-16-####	1936	1950	87 to 105 yrs	Valid
350-18-####	1936	1950	87 to 105 yrs	Valid
350-20-####	1936	1950	87 to 105 yrs	Valid
350-22-####	1936	1950	87 to 105 yrs	Valid
350-24-####	1936	1950	87 to 105 yrs	Valid
350-26-####	1951	unknown	78 to 90 yrs	Valid
350-28-####	1952	1953	84 to 89 yrs	Valid
350-30-####	1954	1955	82 to 87 yrs	Valid
350-32-####	1971	1972	65 to 70 yrs	Valid
350-34-####	1958	1960	77 to 83 yrs	Valid
350-36-####	1961	1962	75 to 80 yrs	Valid
350-38-####	1963	unknown	66 to 78 yrs	Valid
350-40-####	1963	1964	73 to 78 yrs	Valid
350-42-####	1965	unknown	64 to 76 yrs	Valid
350-44-####	1966	unknown	63 to 75 yrs	Valid
350-46-####	1967	1968	69 to 74 yrs	Valid
350-48-####	1969	unknown	60 to 72 yrs	Valid
350-50-####	1970	unknown	59 to 71 yrs	Valid
350-52-####	1971	1972	65 to 70 yrs	Valid
350-54-####	1973	unknown	56 to 68 yrs	Valid
350-56-####	1973	unknown	56 to 68 yrs	Valid
350-58-####	1974	unknown	55 to 67 yrs	Valid
350-60-####	1975	unknown	54 to 66 yrs	Valid
350-62-####	1976	unknown	53 to 65 yrs	Valid
350-64-####	1977	unknown	52 to 64 yrs	Valid
350-66-####	1978	1979	58 to 63 yrs	Valid
350-68-####	1980	1981	56 to 61 yrs	Valid
350-70-####	1982	unknown	47 to 59 yrs	Valid
350-72-####	1983	1984	53 to 58 yrs	Valid
350-74-####	1985	unknown	44 to 56 yrs	Valid
350-76-####	1986	unknown	43 to 55 yrs	Valid
350-78-####	1987	unknown	42 to 54 yrs	Valid

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