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	57 to 62 yrs	Valid
330-72-####	1982	unknown	48 to 60 yrs	Valid
330-74-####	1983	1985	53 to 59 yrs	Valid
330-76-####	1986	unknown	44 to 56 yrs	Valid
330-78-####	1987	unknown	43 to 55 yrs	Valid
330-80-####	1988	unknown	30 to 38 yrs	Valid
330-82-####	1989	1992	34 to 37 yrs	Valid
330-84-####	1989	1992	34 to 37 yrs	Valid
330-86-####	1989	1992	34 to 37 yrs	Valid
330-88-####	1993	unknown	25 to 33 yrs	Valid
330-90-####	1994	unknown	24 to 32 yrs	Valid
330-92-####	1996	unknown	22 to 30 yrs	Valid
330-94-####	1997	1998	28 to 29 yrs	Valid
330-96-####	1999	unknown	19 to 27 yrs	Valid
330-98-####	2001	unknown	17 to 25 yrs	Valid
331-01-####	1936	1950	88 to 106 yrs	Valid
331-02-####	2003	2004	22 to 23 yrs	Valid
331-03-####	1936	1950	88 to 106 yrs	Valid
331-04-####	2004	2006	20 to 22 yrs	Valid
331-05-####	1936	1950	88 to 106 yrs	Valid
331-06-####	2006	2008	18 to 20 yrs	Valid
331-07-####	1936	1950	88 to 106 yrs	Valid
331-08-####	2008	2010	16 to 18 yrs	Valid
331-09-####	1936	1950	88 to 106 yrs	Valid
331-10-####	1936	1950	88 to 106 yrs	Valid
331-11-####	2010	2011	15 to 16 yrs	Valid
331-12-####	1936	1950	88 to 106 yrs	Valid
331-14-####	1936	1950	88 to 106 yrs	Valid
331-16-####	1936	1950	88 to 106 yrs	Valid
331-18-####	1936	1950	88 to 106 yrs	Valid
331-20-####	1936	1950	88 to 106 yrs	Valid
331-22-####	1936	1950	88 to 106 yrs	Valid
331-24-####	1936	1950	88 to 106 yrs	Valid
331-26-####	1936	1950	88 to 106 yrs	Valid
331-28-####	1951	1952	86 to 91 yrs	Valid
331-30-####	1953	1954	84 to 89 yrs	Valid
331-32-####	1955	1956	82 to 87 yrs	Valid
331-34-####	1957	1959	79 to 85 yrs	Valid
331-36-####	1960	1961	77 to 82 yrs	Valid
331-38-####	1962	unknown	68 to 80 yrs	Valid
331-40-####	1963	unknown	67 to 79 yrs	Valid
331-42-####	1964	unknown	66 to 78 yrs	Valid
331-44-####	1965	1966	72 to 77 yrs	Valid
331-46-####	1967	unknown	63 to 75 yrs	Valid
331-48-####	1968	unknown	62 to 74 yrs	Valid
331-50-####	1969	unknown	61 to 73 yrs	Valid
331-52-####	1970	1971	67 to 72 yrs	Valid
331-54-####	1972	unknown	58 to 70 yrs	Valid
331-56-####	1973	unknown	57 to 69 yrs	Valid
331-58-####	1973	1974	64 to 69 yrs	Valid

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