US SSN Number Regular Expression

A regular expression that accurately matches the valid SSN (Social Security Number) number.

/^(?!666|000|9\\d{2})\\d{3}-(?!00)\\d{2}-(?!0{4})\\d{4}$/

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Where:

• (?!666|000|9\\d{2})\\d{3} represents the first 3 digits should not start with 000, 666, or between 900 and 999.
• (?!00)\\d{2} represents the next 2 digits should not start with 00 and it should be any from 01-99.
• (?!0{4})\\d{4} represents the next 4 digits can’t 0000 and it should be any from 0001-9999.

SSN Number Examples:

• 123-33-0002
• 231-22-1234
• 321-66-4321

See Also:

• US EIN (Employer Identification Number) Regular Expression
• Regular Expression For US Postal Codes