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	54 to 66 yrs	Valid
321-62-####	1975	unknown	53 to 65 yrs	Valid
321-64-####	1976	unknown	52 to 64 yrs	Valid
321-66-####	1977	1978	58 to 63 yrs	Valid
321-68-####	1979	1980	56 to 61 yrs	Valid
321-70-####	1981	unknown	47 to 59 yrs	Valid
321-72-####	1982	1983	53 to 58 yrs	Valid
321-74-####	1984	unknown	44 to 56 yrs	Valid
321-76-####	1985	1986	50 to 55 yrs	Valid
321-78-####	1987	unknown	41 to 53 yrs	Valid
321-80-####	1988	unknown	28 to 36 yrs	Valid
321-82-####	1988	unknown	28 to 36 yrs	Valid
321-84-####	1989	1992	32 to 35 yrs	Valid
321-86-####	1989	1992	32 to 35 yrs	Valid
321-88-####	1989	1992	32 to 35 yrs	Valid
321-90-####	1994	unknown	22 to 30 yrs	Valid
321-92-####	1995	unknown	21 to 29 yrs	Valid
321-94-####	1997	1998	26 to 27 yrs	Valid
321-96-####	1999	unknown	17 to 25 yrs	Valid
321-98-####	2000	2001	23 to 24 yrs	Valid
322-01-####	1936	1950	86 to 104 yrs	Valid
322-02-####	2002	2004	20 to 22 yrs	Valid
322-03-####	1936	1950	86 to 104 yrs	Valid
322-04-####	2004	2006	18 to 20 yrs	Valid
322-05-####	1936	1950	86 to 104 yrs	Valid
322-06-####	2006	2008	16 to 18 yrs	Valid
322-07-####	1936	1950	86 to 104 yrs	Valid
322-08-####	2008	2010	14 to 16 yrs	Valid
322-09-####	1936	1950	86 to 104 yrs	Valid
322-10-####	1936	1950	86 to 104 yrs	Valid
322-11-####	2010	2011	13 to 14 yrs	Valid
322-12-####	1936	1950	86 to 104 yrs	Valid
322-14-####	1936	1950	86 to 104 yrs	Valid
322-16-####	1936	1950	86 to 104 yrs	Valid
322-18-####	1936	1950	86 to 104 yrs	Valid
322-20-####	1936	1950	86 to 104 yrs	Valid
322-22-####	1936	1950	86 to 104 yrs	Valid
322-24-####	1936	1950	86 to 104 yrs	Valid
322-26-####	1936	1950	86 to 104 yrs	Valid
322-28-####	1951	unknown	77 to 89 yrs	Valid
322-30-####	1952	1954	82 to 88 yrs	Valid
322-32-####	1955	1956	80 to 85 yrs	Valid
322-34-####	1957	1958	78 to 83 yrs	Valid
322-36-####	1959	1960	76 to 81 yrs	Valid
322-38-####	1961	1962	74 to 79 yrs	Valid
322-40-####	1963	unknown	65 to 77 yrs	Valid
322-42-####	1964	unknown	64 to 76 yrs	Valid
322-44-####	1965	1966	70 to 75 yrs	Valid
322-46-####	1967	unknown	61 to 73 yrs	Valid
322-48-####	1968	unknown	60 to 72 yrs	Valid

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