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?
319-80-####	1988	unknown	30 to 38 yrs	Valid
319-82-####	1988	unknown	30 to 38 yrs	Valid
319-84-####	1989	1992	34 to 37 yrs	Valid
319-86-####	1989	1992	34 to 37 yrs	Valid
319-88-####	1989	1992	34 to 37 yrs	Valid
319-90-####	1994	unknown	24 to 32 yrs	Valid
319-92-####	1995	unknown	23 to 31 yrs	Valid
319-94-####	1997	1998	28 to 29 yrs	Valid
319-96-####	1999	unknown	19 to 27 yrs	Valid
319-98-####	2000	unknown	18 to 26 yrs	Valid
320-01-####	1936	1950	88 to 106 yrs	Valid
320-02-####	2002	2004	22 to 24 yrs	Valid
320-03-####	1936	1950	88 to 106 yrs	Valid
320-04-####	2004	2006	20 to 22 yrs	Valid
320-05-####	1936	1950	88 to 106 yrs	Valid
320-06-####	2006	2008	18 to 20 yrs	Valid
320-07-####	1936	1950	88 to 106 yrs	Valid
320-08-####	2008	2010	16 to 18 yrs	Valid
320-09-####	1936	1950	88 to 106 yrs	Valid
320-10-####	1936	1950	88 to 106 yrs	Valid
320-11-####	2010	2011	15 to 16 yrs	Valid
320-12-####	1936	1950	88 to 106 yrs	Valid
320-14-####	1936	1950	88 to 106 yrs	Valid
320-16-####	1936	1950	88 to 106 yrs	Valid
320-18-####	1936	1950	88 to 106 yrs	Valid
320-20-####	1936	1950	88 to 106 yrs	Valid
320-22-####	1936	1950	88 to 106 yrs	Valid
320-24-####	1936	1950	88 to 106 yrs	Valid
320-26-####	1936	1950	88 to 106 yrs	Valid
320-28-####	1951	unknown	79 to 91 yrs	Valid
320-30-####	1952	1954	84 to 90 yrs	Valid
320-32-####	1955	unknown	75 to 87 yrs	Valid
320-34-####	1956	1958	80 to 86 yrs	Valid
320-36-####	1959	1960	78 to 83 yrs	Valid
320-38-####	1961	1962	76 to 81 yrs	Valid
320-40-####	1963	unknown	67 to 79 yrs	Valid
320-42-####	1964	unknown	66 to 78 yrs	Valid
320-44-####	1965	1966	72 to 77 yrs	Valid
320-46-####	1967	unknown	63 to 75 yrs	Valid
320-48-####	1968	unknown	62 to 74 yrs	Valid
320-50-####	1969	unknown	61 to 73 yrs	Valid
320-52-####	1970	1971	67 to 72 yrs	Valid
320-54-####	1972	unknown	58 to 70 yrs	Valid
320-56-####	1973	unknown	57 to 69 yrs	Valid
320-58-####	1973	unknown	57 to 69 yrs	Valid
320-60-####	1974	unknown	56 to 68 yrs	Valid
320-62-####	1975	unknown	55 to 67 yrs	Valid
320-64-####	1976	unknown	54 to 66 yrs	Valid
320-66-####	1977	1978	60 to 65 yrs	Valid
320-68-####	1979	1980	58 to 63 yrs	Valid

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