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?
330-70-####	1980	1981	56 to 61 yrs	Valid
330-72-####	1982	unknown	47 to 59 yrs	Valid
330-74-####	1983	1985	52 to 58 yrs	Valid
330-76-####	1986	unknown	43 to 55 yrs	Valid
330-78-####	1987	unknown	42 to 54 yrs	Valid
330-80-####	1988	unknown	29 to 37 yrs	Valid
330-82-####	1989	1992	33 to 36 yrs	Valid
330-84-####	1989	1992	33 to 36 yrs	Valid
330-86-####	1989	1992	33 to 36 yrs	Valid
330-88-####	1993	unknown	24 to 32 yrs	Valid
330-90-####	1994	unknown	23 to 31 yrs	Valid
330-92-####	1996	unknown	21 to 29 yrs	Valid
330-94-####	1997	1998	27 to 28 yrs	Valid
330-96-####	1999	unknown	18 to 26 yrs	Valid
330-98-####	2001	unknown	16 to 24 yrs	Valid
331-01-####	1936	1950	87 to 105 yrs	Valid
331-02-####	2003	2004	21 to 22 yrs	Valid
331-03-####	1936	1950	87 to 105 yrs	Valid
331-04-####	2004	2006	19 to 21 yrs	Valid
331-05-####	1936	1950	87 to 105 yrs	Valid
331-06-####	2006	2008	17 to 19 yrs	Valid
331-07-####	1936	1950	87 to 105 yrs	Valid
331-08-####	2008	2010	15 to 17 yrs	Valid
331-09-####	1936	1950	87 to 105 yrs	Valid
331-10-####	1936	1950	87 to 105 yrs	Valid
331-11-####	2010	2011	14 to 15 yrs	Valid
331-12-####	1936	1950	87 to 105 yrs	Valid
331-14-####	1936	1950	87 to 105 yrs	Valid
331-16-####	1936	1950	87 to 105 yrs	Valid
331-18-####	1936	1950	87 to 105 yrs	Valid
331-20-####	1936	1950	87 to 105 yrs	Valid
331-22-####	1936	1950	87 to 105 yrs	Valid
331-24-####	1936	1950	87 to 105 yrs	Valid
331-26-####	1936	1950	87 to 105 yrs	Valid
331-28-####	1951	1952	85 to 90 yrs	Valid
331-30-####	1953	1954	83 to 88 yrs	Valid
331-32-####	1955	1956	81 to 86 yrs	Valid
331-34-####	1957	1959	78 to 84 yrs	Valid
331-36-####	1960	1961	76 to 81 yrs	Valid
331-38-####	1962	unknown	67 to 79 yrs	Valid
331-40-####	1963	unknown	66 to 78 yrs	Valid
331-42-####	1964	unknown	65 to 77 yrs	Valid
331-44-####	1965	1966	71 to 76 yrs	Valid
331-46-####	1967	unknown	62 to 74 yrs	Valid
331-48-####	1968	unknown	61 to 73 yrs	Valid
331-50-####	1969	unknown	60 to 72 yrs	Valid
331-52-####	1970	1971	66 to 71 yrs	Valid
331-54-####	1972	unknown	57 to 69 yrs	Valid
331-56-####	1973	unknown	56 to 68 yrs	Valid
331-58-####	1973	1974	63 to 68 yrs	Valid

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