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United StatesSocial Security Number

Also known asSocial Security number · SSN

ISO codes
USA / US
Region
Americas
Length
9 characters
Checksum
No

Character map

Each cell is one character of the sample test value; separators are shown as-is.

Sample test value

796-11-8499

This value was randomly generated to pass this country's validation rules. It is not a real ID and does not belong to any person.

(01)Country reference

Specification

Format
  • ###-##-####
  • # — any digit
  • Other characters are written as shown.
Length

9 characters

Checksum
No

Only the format is checked — this number has no check digit.

Embedded data
No

This number encodes no extractable personal data.

References

Check a United States number now.

Validate a United States Social Security Number now — it runs in your browser and the number never leaves your device.

Try it in the validator

Validation rules for United States come from the open-source idnumbers library. Report a format issue on GitHub