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	55 to 60 yrs	Valid
330-72-####	1982	unknown	46 to 58 yrs	Valid
330-74-####	1983	1985	51 to 57 yrs	Valid
330-76-####	1986	unknown	42 to 54 yrs	Valid
330-78-####	1987	unknown	41 to 53 yrs	Valid
330-80-####	1988	unknown	28 to 36 yrs	Valid
330-82-####	1989	1992	32 to 35 yrs	Valid
330-84-####	1989	1992	32 to 35 yrs	Valid
330-86-####	1989	1992	32 to 35 yrs	Valid
330-88-####	1993	unknown	23 to 31 yrs	Valid
330-90-####	1994	unknown	22 to 30 yrs	Valid
330-92-####	1996	unknown	20 to 28 yrs	Valid
330-94-####	1997	1998	26 to 27 yrs	Valid
330-96-####	1999	unknown	17 to 25 yrs	Valid
330-98-####	2001	unknown	15 to 23 yrs	Valid
331-01-####	1936	1950	86 to 104 yrs	Valid
331-02-####	2003	2004	20 to 21 yrs	Valid
331-03-####	1936	1950	86 to 104 yrs	Valid
331-04-####	2004	2006	18 to 20 yrs	Valid
331-05-####	1936	1950	86 to 104 yrs	Valid
331-06-####	2006	2008	16 to 18 yrs	Valid
331-07-####	1936	1950	86 to 104 yrs	Valid
331-08-####	2008	2010	14 to 16 yrs	Valid
331-09-####	1936	1950	86 to 104 yrs	Valid
331-10-####	1936	1950	86 to 104 yrs	Valid
331-11-####	2010	2011	13 to 14 yrs	Valid
331-12-####	1936	1950	86 to 104 yrs	Valid
331-14-####	1936	1950	86 to 104 yrs	Valid
331-16-####	1936	1950	86 to 104 yrs	Valid
331-18-####	1936	1950	86 to 104 yrs	Valid
331-20-####	1936	1950	86 to 104 yrs	Valid
331-22-####	1936	1950	86 to 104 yrs	Valid
331-24-####	1936	1950	86 to 104 yrs	Valid
331-26-####	1936	1950	86 to 104 yrs	Valid
331-28-####	1951	1952	84 to 89 yrs	Valid
331-30-####	1953	1954	82 to 87 yrs	Valid
331-32-####	1955	1956	80 to 85 yrs	Valid
331-34-####	1957	1959	77 to 83 yrs	Valid
331-36-####	1960	1961	75 to 80 yrs	Valid
331-38-####	1962	unknown	66 to 78 yrs	Valid
331-40-####	1963	unknown	65 to 77 yrs	Valid
331-42-####	1964	unknown	64 to 76 yrs	Valid
331-44-####	1965	1966	70 to 75 yrs	Valid
331-46-####	1967	unknown	61 to 73 yrs	Valid
331-48-####	1968	unknown	60 to 72 yrs	Valid
331-50-####	1969	unknown	59 to 71 yrs	Valid
331-52-####	1970	1971	65 to 70 yrs	Valid
331-54-####	1972	unknown	56 to 68 yrs	Valid
331-56-####	1973	unknown	55 to 67 yrs	Valid
331-58-####	1973	1974	62 to 67 yrs	Valid

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