What are the SSN prefixes for North Dakota?

North Dakota was assigned the area-number range 501-502. A Social Security number issued there before 2011 begins with one of these three-digit numbers.

Does an SSN starting with 501 mean the person is from North Dakota?

For cards issued before June 25, 2011, an SSN whose first three digits fall in North Dakota's range was issued in North Dakota, 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 North Dakota

Area numbers 501-502

area range: 1
lowest area number: 501
highest area number: 502
area numbers: 2

North Dakota was assigned the Social Security area-number range 501-502. Before SSA randomized number assignment in June 2011, any SSN beginning with one of these three-digit prefixes was issued in North Dakota, generally based on the mailing address on the application. Newer numbers are assigned randomly and no longer indicate a state.

North Dakota area-number ranges

Area-number range	Count
501-502	2

Sample North Dakota SSN patterns

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

Pattern	Estimated issued	Status
501-01-####	1936-1950	Valid
501-03-####	1936-1950	Valid
501-05-####	1936-1950	Valid
501-07-####	1936-1950	Valid
501-09-####	1936-1950	Valid
501-10-####	1936-1950	Valid
501-12-####	1936-1950	Valid
501-14-####	1936-1950	Valid
501-16-####	1936-1950	Valid
501-18-####	1936-1950	Valid
501-20-####	1936-1950	Valid
501-22-####	1936-1950	Valid
501-24-####	1936-1950	Valid
501-26-####	1936-1950	Valid
501-28-####	1938-1951	Valid
501-30-####	1939-1952	Valid
501-32-####	1941-1953	Valid
501-34-####	1943-1955	Valid
501-36-####	1944-1956	Valid
501-38-####	1946-1957	Valid
501-40-####	1947-1958	Valid
501-42-####	1949-1959	Valid
501-44-####	1951-1960	Valid
501-46-####	1952-1961	Valid

Frequently asked questions

What are the SSN prefixes for North Dakota?: North Dakota was assigned the area-number range 501-502. A Social Security number issued there before 2011 begins with one of these three-digit numbers.
Does an SSN starting with 501 mean the person is from North Dakota?: For cards issued before June 25, 2011, an SSN whose first three digits fall in North Dakota's range was issued in North Dakota, 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.