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?
323-40-####	1963	unknown	67 to 79 yrs	Valid
323-42-####	1964	unknown	66 to 78 yrs	Valid
323-44-####	1965	1966	72 to 77 yrs	Valid
323-46-####	1967	unknown	63 to 75 yrs	Valid
323-48-####	1968	unknown	62 to 74 yrs	Valid
323-50-####	1969	unknown	61 to 73 yrs	Valid
323-52-####	1970	unknown	60 to 72 yrs	Valid
323-54-####	1971	1972	66 to 71 yrs	Valid
323-56-####	1973	unknown	57 to 69 yrs	Valid
323-58-####	1973	unknown	57 to 69 yrs	Valid
323-60-####	1974	unknown	56 to 68 yrs	Valid
323-62-####	1975	unknown	55 to 67 yrs	Valid
323-64-####	1976	1977	61 to 66 yrs	Valid
323-66-####	1978	unknown	52 to 64 yrs	Valid
323-68-####	1979	1980	58 to 63 yrs	Valid
323-70-####	1981	unknown	49 to 61 yrs	Valid
323-72-####	1982	1983	55 to 60 yrs	Valid
323-74-####	1984	unknown	46 to 58 yrs	Valid
323-76-####	1985	1986	52 to 57 yrs	Valid
323-78-####	1987	unknown	43 to 55 yrs	Valid
323-80-####	1988	unknown	30 to 38 yrs	Valid
323-82-####	1988	unknown	30 to 38 yrs	Valid
323-84-####	1989	1992	34 to 37 yrs	Valid
323-86-####	1989	1992	34 to 37 yrs	Valid
323-88-####	1989	1992	34 to 37 yrs	Valid
323-90-####	1994	unknown	24 to 32 yrs	Valid
323-92-####	1995	unknown	23 to 31 yrs	Valid
323-94-####	1997	1998	28 to 29 yrs	Valid
323-96-####	1999	unknown	19 to 27 yrs	Valid
323-98-####	2000	2001	25 to 26 yrs	Valid
324-01-####	1936	1950	88 to 106 yrs	Valid
324-02-####	2002	2004	22 to 24 yrs	Valid
324-03-####	1936	1950	88 to 106 yrs	Valid
324-04-####	2004	2006	20 to 22 yrs	Valid
324-05-####	1936	1950	88 to 106 yrs	Valid
324-06-####	2006	2008	18 to 20 yrs	Valid
324-07-####	1936	1950	88 to 106 yrs	Valid
324-08-####	2008	2010	16 to 18 yrs	Valid
324-09-####	1936	1950	88 to 106 yrs	Valid
324-10-####	1936	1950	88 to 106 yrs	Valid
324-11-####	2010	2011	15 to 16 yrs	Valid
324-12-####	1936	1950	88 to 106 yrs	Valid
324-14-####	1936	1950	88 to 106 yrs	Valid
324-16-####	1936	1950	88 to 106 yrs	Valid
324-18-####	1936	1950	88 to 106 yrs	Valid
324-20-####	1936	1950	88 to 106 yrs	Valid
324-22-####	1936	1950	88 to 106 yrs	Valid
324-24-####	1936	1950	88 to 106 yrs	Valid
324-26-####	1936	1950	88 to 106 yrs	Valid
324-28-####	1951	unknown	79 to 91 yrs	Valid

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