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?
321-60-####	1974	unknown	55 to 67 yrs	Valid
321-62-####	1975	unknown	54 to 66 yrs	Valid
321-64-####	1976	unknown	53 to 65 yrs	Valid
321-66-####	1977	1978	59 to 64 yrs	Valid
321-68-####	1979	1980	57 to 62 yrs	Valid
321-70-####	1981	unknown	48 to 60 yrs	Valid
321-72-####	1982	1983	54 to 59 yrs	Valid
321-74-####	1984	unknown	45 to 57 yrs	Valid
321-76-####	1985	1986	51 to 56 yrs	Valid
321-78-####	1987	unknown	42 to 54 yrs	Valid
321-80-####	1988	unknown	29 to 37 yrs	Valid
321-82-####	1988	unknown	29 to 37 yrs	Valid
321-84-####	1989	1992	33 to 36 yrs	Valid
321-86-####	1989	1992	33 to 36 yrs	Valid
321-88-####	1989	1992	33 to 36 yrs	Valid
321-90-####	1994	unknown	23 to 31 yrs	Valid
321-92-####	1995	unknown	22 to 30 yrs	Valid
321-94-####	1997	1998	27 to 28 yrs	Valid
321-96-####	1999	unknown	18 to 26 yrs	Valid
321-98-####	2000	2001	24 to 25 yrs	Valid
322-01-####	1936	1950	87 to 105 yrs	Valid
322-02-####	2002	2004	21 to 23 yrs	Valid
322-03-####	1936	1950	87 to 105 yrs	Valid
322-04-####	2004	2006	19 to 21 yrs	Valid
322-05-####	1936	1950	87 to 105 yrs	Valid
322-06-####	2006	2008	17 to 19 yrs	Valid
322-07-####	1936	1950	87 to 105 yrs	Valid
322-08-####	2008	2010	15 to 17 yrs	Valid
322-09-####	1936	1950	87 to 105 yrs	Valid
322-10-####	1936	1950	87 to 105 yrs	Valid
322-11-####	2010	2011	14 to 15 yrs	Valid
322-12-####	1936	1950	87 to 105 yrs	Valid
322-14-####	1936	1950	87 to 105 yrs	Valid
322-16-####	1936	1950	87 to 105 yrs	Valid
322-18-####	1936	1950	87 to 105 yrs	Valid
322-20-####	1936	1950	87 to 105 yrs	Valid
322-22-####	1936	1950	87 to 105 yrs	Valid
322-24-####	1936	1950	87 to 105 yrs	Valid
322-26-####	1936	1950	87 to 105 yrs	Valid
322-28-####	1951	unknown	78 to 90 yrs	Valid
322-30-####	1952	1954	83 to 89 yrs	Valid
322-32-####	1955	1956	81 to 86 yrs	Valid
322-34-####	1957	1958	79 to 84 yrs	Valid
322-36-####	1959	1960	77 to 82 yrs	Valid
322-38-####	1961	1962	75 to 80 yrs	Valid
322-40-####	1963	unknown	66 to 78 yrs	Valid
322-42-####	1964	unknown	65 to 77 yrs	Valid
322-44-####	1965	1966	71 to 76 yrs	Valid
322-46-####	1967	unknown	62 to 74 yrs	Valid
322-48-####	1968	unknown	61 to 73 yrs	Valid

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