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?
325-20-####	1936	1950	86 to 104 yrs	Valid
325-22-####	1936	1950	86 to 104 yrs	Valid
325-24-####	1936	1950	86 to 104 yrs	Valid
325-26-####	1936	1950	86 to 104 yrs	Valid
325-28-####	1951	unknown	77 to 89 yrs	Valid
325-30-####	1952	1954	82 to 88 yrs	Valid
325-32-####	1955	unknown	73 to 85 yrs	Valid
325-34-####	1956	1958	78 to 84 yrs	Valid
325-36-####	1959	1961	75 to 81 yrs	Valid
325-38-####	1962	unknown	66 to 78 yrs	Valid
325-40-####	1963	unknown	65 to 77 yrs	Valid
325-42-####	1964	unknown	64 to 76 yrs	Valid
325-44-####	1965	1966	70 to 75 yrs	Valid
325-46-####	1967	unknown	61 to 73 yrs	Valid
325-48-####	1968	unknown	60 to 72 yrs	Valid
325-50-####	1969	unknown	59 to 71 yrs	Valid
325-52-####	1970	1971	65 to 70 yrs	Valid
325-54-####	1972	unknown	56 to 68 yrs	Valid
325-56-####	1973	unknown	55 to 67 yrs	Valid
325-58-####	1973	unknown	55 to 67 yrs	Valid
325-60-####	1974	unknown	54 to 66 yrs	Valid
325-62-####	1975	unknown	53 to 65 yrs	Valid
325-64-####	1976	1977	59 to 64 yrs	Valid
325-66-####	1978	unknown	50 to 62 yrs	Valid
325-68-####	1978	1979	57 to 62 yrs	Valid
325-70-####	1980	unknown	48 to 60 yrs	Valid
325-72-####	1981	1982	54 to 59 yrs	Valid
325-74-####	1983	unknown	45 to 57 yrs	Valid
325-76-####	1984	1986	50 to 56 yrs	Valid
325-78-####	1987	unknown	41 to 53 yrs	Valid
325-80-####	1988	unknown	28 to 36 yrs	Valid
325-82-####	1989	1992	32 to 35 yrs	Valid
325-84-####	1989	1992	32 to 35 yrs	Valid
325-86-####	1989	1992	32 to 35 yrs	Valid
325-88-####	1989	1992	32 to 35 yrs	Valid
325-90-####	1994	unknown	22 to 30 yrs	Valid
325-92-####	1995	unknown	21 to 29 yrs	Valid
325-94-####	1997	1998	26 to 27 yrs	Valid
325-96-####	1999	unknown	17 to 25 yrs	Valid
325-98-####	2001	unknown	15 to 23 yrs	Valid
326-01-####	1936	1950	86 to 104 yrs	Valid
326-02-####	2002	2004	20 to 22 yrs	Valid
326-03-####	1936	1950	86 to 104 yrs	Valid
326-04-####	2004	2006	18 to 20 yrs	Valid
326-05-####	1936	1950	86 to 104 yrs	Valid
326-06-####	2006	2008	16 to 18 yrs	Valid
326-07-####	1936	1950	86 to 104 yrs	Valid
326-08-####	2008	2010	14 to 16 yrs	Valid
326-09-####	1936	1950	86 to 104 yrs	Valid
326-10-####	1936	1950	86 to 104 yrs	Valid

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