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?
326-11-####	2010	2011	13 to 14 yrs	Valid
326-12-####	1936	1950	86 to 104 yrs	Valid
326-14-####	1936	1950	86 to 104 yrs	Valid
326-16-####	1936	1950	86 to 104 yrs	Valid
326-18-####	1936	1950	86 to 104 yrs	Valid
326-20-####	1936	1950	86 to 104 yrs	Valid
326-22-####	1936	1950	86 to 104 yrs	Valid
326-24-####	1936	1950	86 to 104 yrs	Valid
326-26-####	1936	1950	86 to 104 yrs	Valid
326-28-####	1951	unknown	77 to 89 yrs	Valid
326-30-####	1952	1954	82 to 88 yrs	Valid
326-32-####	1955	1956	80 to 85 yrs	Valid
326-34-####	1957	1958	78 to 83 yrs	Valid
326-36-####	1959	1960	76 to 81 yrs	Valid
326-38-####	1961	unknown	67 to 79 yrs	Valid
326-40-####	1962	unknown	66 to 78 yrs	Valid
326-42-####	1963	unknown	65 to 77 yrs	Valid
326-44-####	1964	1965	71 to 76 yrs	Valid
326-46-####	1966	unknown	62 to 74 yrs	Valid
326-48-####	1967	unknown	61 to 73 yrs	Valid
326-50-####	1968	unknown	60 to 72 yrs	Valid
326-52-####	1969	unknown	59 to 71 yrs	Valid
326-54-####	1970	1971	65 to 70 yrs	Valid
326-56-####	1972	unknown	56 to 68 yrs	Valid
326-58-####	1972	unknown	56 to 68 yrs	Valid
326-60-####	1973	unknown	55 to 67 yrs	Valid
326-62-####	1974	unknown	54 to 66 yrs	Valid
326-64-####	1975	1976	60 to 65 yrs	Valid
326-66-####	1977	unknown	51 to 63 yrs	Valid
326-68-####	1978	1979	57 to 62 yrs	Valid
326-70-####	1980	unknown	48 to 60 yrs	Valid
326-72-####	1981	1983	53 to 59 yrs	Valid
326-74-####	1984	1985	51 to 56 yrs	Valid
326-76-####	1986	unknown	42 to 54 yrs	Valid
326-78-####	1987	unknown	41 to 53 yrs	Valid
326-80-####	1988	unknown	28 to 36 yrs	Valid
326-82-####	1989	1992	32 to 35 yrs	Valid
326-84-####	1989	1992	32 to 35 yrs	Valid
326-86-####	1989	1992	32 to 35 yrs	Valid
326-88-####	1989	1992	32 to 35 yrs	Valid
326-90-####	1994	unknown	22 to 30 yrs	Valid
326-92-####	1995	unknown	21 to 29 yrs	Valid
326-94-####	1997	1998	26 to 27 yrs	Valid
326-96-####	1999	unknown	17 to 25 yrs	Valid
326-98-####	2001	unknown	15 to 23 yrs	Valid
327-01-####	1936	1950	86 to 104 yrs	Valid
327-02-####	2002	2004	20 to 22 yrs	Valid
327-03-####	1936	1950	86 to 104 yrs	Valid
327-04-####	2004	2006	18 to 20 yrs	Valid
327-05-####	1936	1950	86 to 104 yrs	Valid

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