What are the SSN prefixes for District of Columbia?

District of Columbia was assigned the area-number range 577-579. A Social Security number issued there before 2011 begins with one of these three-digit numbers.

Does an SSN starting with 577 mean the person is from District of Columbia?

For cards issued before June 25, 2011, an SSN whose first three digits fall in District of Columbia's range was issued in District of Columbia, usually based on the mailing address on the application, not necessarily birthplace. Numbers issued after randomization carry no location meaning.

How can I check a specific number?

Use the SSN checker to enter a full number and see whether its structure is valid, which state it maps to, and a rough estimate of when it was issued.

Social Security Number Prefixes for District of Columbia

Area numbers 577-579

area range: 1
lowest area number: 577
highest area number: 579
area numbers: 3

District of Columbia was assigned the Social Security area-number range 577-579. Before SSA randomized number assignment in June 2011, any SSN beginning with one of these three-digit prefixes was issued in District of Columbia, generally based on the mailing address on the application. Newer numbers are assigned randomly and no longer indicate a state.

District of Columbia area-number ranges

Area-number range	Count
577-579	3

Sample District of Columbia SSN patterns

Estimated issue years for the lowest area/group combinations (illustrative):

Pattern	Estimated issued	Status
577-01-####	1936-1950	Valid
577-03-####	1936-1950	Valid
577-05-####	1936-1950	Valid
577-07-####	1936-1950	Valid
577-09-####	1936-1950	Valid
577-10-####	1936-1950	Valid
577-12-####	1936-1950	Valid
577-14-####	1936-1950	Valid
577-16-####	1936-1950	Valid
577-18-####	1936-1950	Valid
577-20-####	1936-1950	Valid
577-22-####	1936-1950	Valid
577-24-####	1936-1950	Valid
577-26-####	1936-1950	Valid
577-28-####	1936-1950	Valid
577-30-####	1938-1951	Valid
577-32-####	1939-1952	Valid
577-34-####	1941-1953	Valid
577-36-####	1942-1954	Valid
577-38-####	1944-1955	Valid
577-40-####	1945-1956	Valid
577-42-####	1947-1958	Valid
577-44-####	1948-1959	Valid
577-46-####	1950-1960	Valid

Frequently asked questions

What are the SSN prefixes for District of Columbia?: District of Columbia was assigned the area-number range 577-579. A Social Security number issued there before 2011 begins with one of these three-digit numbers.
Does an SSN starting with 577 mean the person is from District of Columbia?: For cards issued before June 25, 2011, an SSN whose first three digits fall in District of Columbia's range was issued in District of Columbia, usually based on the mailing address on the application, not necessarily birthplace. Numbers issued after randomization carry no location meaning.
How can I check a specific number?: Use the SSN checker to enter a full number and see whether its structure is valid, which state it maps to, and a rough estimate of when it was issued.

Check a specific number with the SSN checker, or see all states.